Alvaro Morata: Has never looked convincing in a Chelsea shirt since arriving for £60m in 2017. Not a total flop in the vein of Torres or Shevchenko but more was expected given the fee and a return of 16 league goals in 47 appearances. Expectations of strikers have grown since the Ronaldo-Messi goal spree of the past decade. Success rating: 5/10. AP Photo
Andriy Shevchenko: One of the most highly-regarded strikers in Europe after a fine spell at AC Milan. Left Chelsea with his reputation in tatters. Nine Premier League goals in 48 appearances is not what Chelsea expected for £30m. Looked like he was running through treacle. Success rating: 3/10. Getty Images
Nicolas Anelka: Was often played in a wide role with Didier Drogba taking centre stage, but showed little signs of the sulkiness which blighted his earlier career. Scored 59 goals across four seasons after costing £15m. Success rating: 8/10. AFP
Daniel Sturridge: Unable to become the main man up front with Drogba around. Scored 24 goals in three-and-a-half years after costing £3.5m from Man City and left for Liverpool for £12m, so good business from Chelsea. Success rating: 7/10. Reuters
Demba Ba: Cost £7m after a prolific spell at Newcastle United but was reduced to a bit-part role at Stamford Bridge. Scored 14 goals in 23 starts before joining Besiktas in 2014 for £8m. Success rating: 6/10. EPA
Romelu Lukaku: Wanted to play games and manager Jose Mourinho was happy to let him go after just four starts for Chelsea. Eventually sold for £28m to Everton. He cost £18m from Anderlecht, so a profit was made but had they kept him for a few more years the profit could have been even bigger. Success rating: 5/10. AP Photo
Samuel Eto'o: A stop-gap free transfer in 2013, he scored 12 goals in 35 appearances including a hat-trick against Manchester United. The season ended trophy-less and he moved on to Everton. Success rating: 6/10. AFP
Fernando Torres: Oh what a waste of money. Looked a world-beater at Liverpool before his £50m move but had a shocker at Chelsea. He scored just once in 18 games in his first season at the club in 2010-11 and it didn't get much better thereafter. Remembered for missing an open goal against Manchester United at Old Trafford. Success rating: 2/10. AMA/Corbis via Getty Images
Mohamed Salah: Far from the player he is now, the Egyptian featured just 19 times scoring twice after arriving from Basel for £11m in 2012. "He was just a lost kid in London," said Jose Mourinho recently, and was subsequently sold to Roma after 18 months. Succes rating: 4/10. Getty Images
Didier Drogba: The perfect modern striker, Chelsea struck gold with his signing in 2004 for £24m. Scored more than 150 goals for the club, won four league titles and the Champions League. Success rating: 10/10. Action Images
Loic Remy: Like Demba Ba he arrived after a strong spell at Newcastle, costing £8.5m in 2013, and then left again after being unable to establish himself. Scored 12 goals before departing on a free in 2017. Success rating: 5/10. AFP
Alexandre Pato: He came, he played, he scored, he played again, and then he left. The Brazilian was a star in Serie A for Milan and was back in his homeland when Chelsea needed a short-term fix. Success rating: 4/10. AFP
Radamel Falcao: Arrived on a season-long loan but featured only 12 times, scoring once in 2015/16, a worse rate than his terrible spell at Man Utd. Injuries held him back but he never looked like doing the business. Success rate: 4/10. EPA
Diego Costa: The snarling Spaniard was made for the Premier League and scored 52 goals in 86 starts after joining for £32m in 2014. Returned to Atletico for £57m so good business, though he has been sorely missed by Chelsea since for his mix of strength, goals and - like him or loathe him - character. Success rating: 9/10. AP
Michy Batshuayi: The Belgian has had a strange Chelsea career. Cost £33m from Marseille and then spent ages sat on the bench. When he did play he invariably scored and has a record of 19 goals from just 18 starts. Still owned by Chelsea, he's been on loan at Valencia. Success rating: 6/10. Getty Images
Olivier Giroud: Signed as a replacement for Diego Costa in January 2018, the Frenchman won the World Cup with France but hasn't had much to cheer since. Eden Hazard raves about the target man but the goals have dried up - just four in the league from 33 appearances since his £18m transfer. Could still come good, though he'll play second fiddle to Higuain if he joins. Success rating: 6/10. Reuters
Alvaro Morata: Has never looked convincing in a Chelsea shirt since arriving for £60m in 2017. Not a total flop in the vein of Torres or Shevchenko but more was expected given the fee and a return of 16 league goals in 47 appearances. Expectations of strikers have grown since the Ronaldo-Messi goal spree of the past decade. Success rating: 5/10. AP Photo
Andriy Shevchenko: One of the most highly-regarded strikers in Europe after a fine spell at AC Milan. Left Chelsea with his reputation in tatters. Nine Premier League goals in 48 appearances is not what Chelsea expected for £30m. Looked like he was running through treacle. Success rating: 3/10. Getty Images
Nicolas Anelka: Was often played in a wide role with Didier Drogba taking centre stage, but showed little signs of the sulkiness which blighted his earlier career. Scored 59 goals across four seasons after costing £15m. Success rating: 8/10. AFP
Daniel Sturridge: Unable to become the main man up front with Drogba around. Scored 24 goals in three-and-a-half years after costing £3.5m from Man City and left for Liverpool for £12m, so good business from Chelsea. Success rating: 7/10. Reuters
Demba Ba: Cost £7m after a prolific spell at Newcastle United but was reduced to a bit-part role at Stamford Bridge. Scored 14 goals in 23 starts before joining Besiktas in 2014 for £8m. Success rating: 6/10. EPA
Romelu Lukaku: Wanted to play games and manager Jose Mourinho was happy to let him go after just four starts for Chelsea. Eventually sold for £28m to Everton. He cost £18m from Anderlecht, so a profit was made but had they kept him for a few more years the profit could have been even bigger. Success rating: 5/10. AP Photo
Samuel Eto'o: A stop-gap free transfer in 2013, he scored 12 goals in 35 appearances including a hat-trick against Manchester United. The season ended trophy-less and he moved on to Everton. Success rating: 6/10. AFP
Fernando Torres: Oh what a waste of money. Looked a world-beater at Liverpool before his £50m move but had a shocker at Chelsea. He scored just once in 18 games in his first season at the club in 2010-11 and it didn't get much better thereafter. Remembered for missing an open goal against Manchester United at Old Trafford. Success rating: 2/10. AMA/Corbis via Getty Images
Mohamed Salah: Far from the player he is now, the Egyptian featured just 19 times scoring twice after arriving from Basel for £11m in 2012. "He was just a lost kid in London," said Jose Mourinho recently, and was subsequently sold to Roma after 18 months. Succes rating: 4/10. Getty Images
Didier Drogba: The perfect modern striker, Chelsea struck gold with his signing in 2004 for £24m. Scored more than 150 goals for the club, won four league titles and the Champions League. Success rating: 10/10. Action Images
Loic Remy: Like Demba Ba he arrived after a strong spell at Newcastle, costing £8.5m in 2013, and then left again after being unable to establish himself. Scored 12 goals before departing on a free in 2017. Success rating: 5/10. AFP
Alexandre Pato: He came, he played, he scored, he played again, and then he left. The Brazilian was a star in Serie A for Milan and was back in his homeland when Chelsea needed a short-term fix. Success rating: 4/10. AFP
Radamel Falcao: Arrived on a season-long loan but featured only 12 times, scoring once in 2015/16, a worse rate than his terrible spell at Man Utd. Injuries held him back but he never looked like doing the business. Success rate: 4/10. EPA
Diego Costa: The snarling Spaniard was made for the Premier League and scored 52 goals in 86 starts after joining for £32m in 2014. Returned to Atletico for £57m so good business, though he has been sorely missed by Chelsea since for his mix of strength, goals and - like him or loathe him - character. Success rating: 9/10. AP
Michy Batshuayi: The Belgian has had a strange Chelsea career. Cost £33m from Marseille and then spent ages sat on the bench. When he did play he invariably scored and has a record of 19 goals from just 18 starts. Still owned by Chelsea, he's been on loan at Valencia. Success rating: 6/10. Getty Images
Olivier Giroud: Signed as a replacement for Diego Costa in January 2018, the Frenchman won the World Cup with France but hasn't had much to cheer since. Eden Hazard raves about the target man but the goals have dried up - just four in the league from 33 appearances since his £18m transfer. Could still come good, though he'll play second fiddle to Higuain if he joins. Success rating: 6/10. Reuters
Alvaro Morata: Has never looked convincing in a Chelsea shirt since arriving for £60m in 2017. Not a total flop in the vein of Torres or Shevchenko but more was expected given the fee and a return of 16 league goals in 47 appearances. Expectations of strikers have grown since the Ronaldo-Messi goal spree of the past decade. Success rating: 5/10. AP Photo
