Borussia Dortmund's Jadon Sancho branded the decision to fine him after being pictured having a home haircut without wearing a mask an "absolute joke".
England forward Sancho's teammate Manuel Akanji has also been fined after they were deemed to have broken rules.
Photos emerged of Sancho, 20, and 24-year-old Swiss defender Akanji having their hair styled in their respective homes, with neither the players nor the hairdresser wearing any personal protective equipment.
"Absolute joke DFL," tweeted Sancho, which was later deleted.
The German league *DFL) said in a statement: "The players from Borussia Dortmund had obviously violated general hygiene and infection protection standards at home hairdressing appointments and in particular the medical-organisational concept of the DFL task force.
"There is no question that professional footballers also have to have their hair cut. However, this currently has to be done in accordance with the medical-organisational concept."
The German football federation (DFB) decided on Wednesday it would not fine Sancho for lifting his Dortmund shirt to reveal a t-shirt bearing the message "Justice For George Floyd" during the win against Paderborn last weekend.
The Bundesliga became the first of the major European football leagues to resume on May 17, following the coronavirus shutdown.
Players and coaches must follow strict health guidelines, including regular testing and only remaining with family members or teammates in between matches.
Rooney's club record
At Everton Appearances: 77; Goals: 17
At Manchester United Appearances: 559; Goals: 253
RESULT
Manchester United 1 Brighton and Hove Albion 0
Man United: Dunk (66' og)
Man of the Match: Shane Duffy (Brighton)
THE BIO
Bio Box
Role Model: Sheikh Zayed, God bless his soul
Favorite book: Zayed Biography of the leader
Favorite quote: To be or not to be, that is the question, from William Shakespeare's Hamlet
Favorite food: seafood
Favorite place to travel: Lebanon
Favorite movie: Braveheart
F1 The Movie
Starring: Brad Pitt, Damson Idris, Kerry Condon, Javier Bardem
Director: Joseph Kosinski
Rating: 4/5
THE SPECS
Engine: 1.6-litre turbo
Transmission: six-speed automatic
Power: 165hp
Torque: 240Nm
Price: From Dh89,000 (Enjoy), Dh99,900 (Innovation)
On sale: Now
Dubai World Cup Carnival card
6.30pm: UAE 1000 Guineas Trial Conditions (TB) US$100,000 (Dirt) 1,400m
7.05pm: Handicap (TB) $135,000 (Turf) 1,000m
7.40pm: Handicap (TB) $175,000 (D) 1,900m
8.15pm: Meydan Challenge Listed Handicap (TB) $175,000 (T) 1,400m
8.50pm: Dubai Stakes Group 3 (TB) $200,000 (D) 1,200m
9.25pm: Dubai Racing Club Classic Listed Handicap (TB) $175,000 (T) 2,410m
The National selections
6.30pm: Final Song
7.05pm: Pocket Dynamo
7.40pm: Dubai Icon
8.15pm: Dubai Legacy
8.50pm: Drafted
9.25pm: Lucius Tiberius
England squad
Goalkeepers: Jordan Pickford, Nick Pope, Aaron Ramsdale
Defenders: Trent Alexander-Arnold, Conor Coady, Marc Guehi, Reece James, Harry Maguire, Tyrone Mings, Luke Shaw, John Stones, Ben White
Midfielders: Jude Bellingham, Conor Gallagher, Mason Mount, Jordan Henderson, Declan Rice, James Ward-Prowse
Forwards: Tammy Abraham, Phil Foden, Jack Grealish, Harry Kane, Bukayo Saka, Emile Smith Rowe, Raheem Sterling
Read more about the coronavirus
Killing of Qassem Suleimani
COMPANY PROFILE
Name: Grubtech
Founders: Mohamed Al Fayed and Mohammed Hammedi
Launched: October 2019
Employees: 50
Financing stage: Seed round (raised $2 million)