Where will he play though? He doesn't have a fixed first-choice position in the team. Mata bossed at CAM last season - one of the best players in the league - so that's taken. Eden Hazard - first-choice winger and the club have got De Bruyne and Schurrle this season, both of whom are far more comfortable and suited to the wings. Another option is deeper in the pivot but then again we bought van Ginkel and have 5 players for that position Oscar will play a lot of games filling in at different positions than being a regular fixture in one position. That will affect his overall output here. edit - To accomodate Oscar as a first-choice player in his preferred CAM position, Mata should shift to the wing. I know Jose has told in the press about Mata playing on the right but I think he's much better/effective at CAM