Lucas Torreira's agent Pablo Bentancur has revealed that the midfielder has been left upset by "some technical differences" and remains keen to leave Arsenal.
The Uruguay international has slipped behind Granit Xhaka, Matteo Guendouzi and Dani Ceballos in the Gunners' central midfield pecking order this term.
Torreira has previously indicated that he wants to return to Italy, where he spent four years with Pescara and Sampdoria, and his representative has reiterated that a move away is a possibility this summer.
"Lucas had been in a bit of a bad mood over some technical differences," Pablo Bentancur told Tuttomercatoweb.
"And then the injury arrived, fortunately less serious than expected. Today he is completely recovered, I believe he will be a market man.
"I will have to speak to Arsenal. The player would love to return to Italy, but it must be acknowledged that Arsenal treated him very well and behaved great."
AC Milan are considered to be the frontrunners to sign Torreira, who is under contract with Arsenal until 2023.