Bayern Munich coach Jupp Heynckes has publicly criticised Pierre-Emerick Aubameyang ahead of his proposed move to Arsenal.
Arsene Wenger is looking to replace Alexis Sanchez, who is expected to join Manchester United before the end of the January transfer window.
Borussia Dortmund's top scorer appears to top of Arsenal's wishlist after they pulled the plug on a deal for Bordeaux's Malcom.
Aubameyang, who is understood to be keen for a move to north London, has scored 13 Bundesliga goals in 15 games this season and would be brought in to help relieve Alexandre Lacazette's struggles in front of goal.
The 28-year-old Gabonese international was omitted from Sunday's 0-0 draw with Wolfsburg after missing a team meeting - and was left out the squad for Friday night's clash with Hertha Berlin due to a reported lack of effort in training.
Aubameyang has twice been suspended by the club for disciplinary reasons this season.
Why Heynckes would 'refuse to sign' Aubameyang
Speaking to reporters on Friday, the Bayern manager slammed two players who have acted unprofessionally in order to force through transfers.
"Things which happened with Aubameyang and [Ousmane] Dembele I see very critically," said Heynckes, as per FourFourTwo. "The clubs which sign those players have to be aware; they [Aubameyang and Dembele] could do the same to them.
"I would refuse to sign such players. Football is a team sport; you can't just be selfish and follow your own goals. You have to think about the fans as well.
"We have to pay attention so that the fans don't turn their backs on us and football.
"If I see that Arsenal was not really successfully in the last years but their tickets became more and more expensive, that's a problem. In Anderlecht our fans protested against the ticket prices - and they were totally right."
After his personal attack on Aubameyang and Dembele, Heynckes went on to suggest that he could not imagine a player behaving that way at Bayern.
"I don't think punishing players is the solution," he said. "It's not really feasible to put a player in the stands for a year.
"You have to come to terms with the player, talk to them and make it clear that they've a responsibility to not just look at their account at the end of the month and clap.
"You need guidelines in a club to make it clear that what you do and don't accept, that's the case at Bayern.
"I won't say it never happens at Bayern, but I cannot imagine it."
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