The problem for me isn't whether Oscar is/will be a great player, the problem is that i can't see any way for Mata,Oscar and Hazard to be in the starting eleven next year if we want to challenge for PL and CL. As much i like him as a person and a player and i want him to succeed here and considering also his pricetag, he needs to play week in week out and i just can't think of a possible way that will benefit both Chelsea (first and foremost) and him.