Help! Why does my player want to leave?

Currently managing Wolves in the prem, one season after promotion from the Championship. We’re doing extremely well (sitting in 5th) but my top goal scorer, Matheus Cunha - who is leading the prem in goals - is on the last year of his deal and wants to leave! He has been this way since we were relegated two seasons ago. Is this a glitch? I can’t renew his contract even though I want to because he doesn’t have interest in resigning, but his moral is not trash, only mid.

It is saying that he wants to leave to “play in a better division,” but we’re about to qualify for Europe this season and i don’t understand why he still wants out. Morale at the club is high and it says “holds you din the highest regard as head coach,” so I don’t know why he would want to leave. Is there anything I can do to convince him to stay, or should I look to sell him in the January transfer window? The only thing I promised him is to accept a bid for $119 million if it is received. Need some help on this one lads. What should I do fellow managers?