Borussia Dortmund have warned their players not to follow the example set by Pierre-Emerick Aubameyang.
Aubameyang left Germany after four-and-a-half successful years in the Bundesliga to join Arsenal.
The striker scored on his debut for the Gunners on Saturday, while Dortmund beat FC Koln 3-2.
Dortmund CEO Hans-Joachim Watzke took the chance to accuse Aubameyang of forcing his move to north London, warning his former teammates not to do the same in the future.
“On Thursday, I laid it on the line for the squad – the next player who does something like that will fail miserably,” he told FAZ.
“He’ll run into major problems. The next player who tries to put us under pressure by withholding performances or even going on strike will not get a pass and will instead sit in the stands.
“They are all aware of it. This is now a public statement. Following Dembele and Aubameyang, there is now an overriding interest for the club – we need to get a better structure into our squad again.
“Aubameyang committed himself to us for this season, especially as a reaction to Dembele’s transfer.
“But he also had the notion that we owed to him because in 2016 he opted for us and decided against very lucrative offers amid the exits of Hummels, Gundogan and Mkhitaryan.
“We had the impression there will be no new start for him in the Ruckrunde [second half of the season]. Not with the fans, not with the team. Too much had been damaged through his behaviour.”