Jeremie Aliadiere says midfielder Matteo Guendouzi needs to grow up quick or face seeing his Arsenal career disappear.
Read: Coronavirus could bankrupt German FA, warns treasurer
The Frenchman was out of favour in the few weeks leading up to the Premier League being suspended after a reported incident of indiscipline during the winter break.
Guendouzi was reported to have had a heated row with Mikel Arteta and members of his coaching staff during the club's winter training camp in Dubai.
Not only did Guendouzi and Arteta argue on the training pitch but they also clashed at the team hotel later that evening.
That led to other reports claiming that Guendouzi is now facing a fight over his long-term future at Arsenal and his absence should be viewed as a warning to the midfielder.
"Listen, I'm a big fan of the guy," Aliadiere told Goal. "He's like my little brother and I always told him that Arsenal would be a very good team for his development as a player and as a human being.
"He took my advice and came to the club, but I just feel Matteo hasn't grown up as a human being yet. He's grown up as a player, he's matured massively as a player and every year he gets better.
"But unfortunately as a man, he hasn't grown and matured as much as I thought he would by joining Arsenal.
"I think that's what he's missing and that's why he's not playing as much under Mikel [Arteta] because Mikel is not really up for that.
"He wants players who are going to do a job for the team and do what they ask him to do. If they are not happy to do that, then he will have someone else do it for him."
- TEAMtalk media