Yeah I think it's good for him to be at a club like Fulham where he can play regularly. To be fair to him I can see why he went to RBL. He had done well there on loan, but in the end by the time he got back there the club had progressed to a level where it was harder for him to get regular minutes
I think the season after under Sarri he was doing well for Chelsea but then picked up a bad achilles injury which effectively wrote off last season for him. Chelsea stupidly had a post-season friendly arranged in the US in between their last PL game and the Europa League final and he got injured in that match. Considering his talent he's played far too little football. 24 already.