He's lost that electric pace he had in his first 2 seasons, mainly due to hamstring injuries, which is unfortunate.
In his third season (14-15) he was very good up until January, where he did seem to strop about not getting the move. And although he wanted to take the penalty for the Belgian lad who died, what he did didn't endear him to the fans.
I still like him and he's shown flashes of form ever since, but he really needs to be played centrally now if at all IMO.
He got a lot of grief the other day but actually if you rewatch (if you can stand to) he linked the play really well in that No.10 role and it allowed Ross more freedom as well. The chance at the end, where Bolasie's shot was cleared, came from a great throughball by Kev.
If an offer comes in for him in Jan though, I do feel we should be looking to cash in and get a proper playmaker in.