A player with 6 months of is contract left but intent on leaving in the summer? A player on 6 months loan and probably won't stay on in the summer?
Every footballer is committed to them self, and will always give 100% to get noticed and attract a bigger club who will give them more money no matter what contract they are on at the moment
Depends if the loan player still has any contract left i suppose . As the contracted player still needs to keep himself in the shop window so to speak. Whereas the loan player still under contract at his parent club & therefore his immediate future sorted. There are still other variables to that scenario so not as straight forward as your initial question.
So no difference What about cost? loan player from Prem, contract player heading to Prem both decent players.