Have watched a lot of Scottish football in general, and the general consensus is that he's extremely talented, but was a bit overawed by the occasion sometimes, and was very injury prone (despite having a fairly injury free season in Portugal). Having said that, I'd also say that he's dealing with an extremely low block in the SPL and a very different playing style. CC has given him the opportunity to drive at defenders, and cut inside - and has probably trusted his talent more than he has in the past.
Amazing what a bit of trust, belief and the opportunity to play with freedom can do.