It depends does he want to be professional footballer or just a passenger. He needs to decide, if he wants to take a wage cut for loan to happen and play regular football or see his football career slip away.The problem is, does he need to play regularly?
We're talking about a player who's now in his mid twenties & has had something like half a dozen appearances for the French national team.
That suggests (to me) that he's either not fancied by whoever selects the French squad, or he's just not interested in putting on the effort/displays that would earn him more call-ups.
None of that is going to affect his £200k per week earnings. So does he really need to play regularly?