Depends on how much you spend on this game including time and money. If the answer is little to both then no way.

I can tell you from experience it is hard to get a CM who gets 8 ratings. Even really expensive fast trainers. I have found exactly 1 player at that position who plays as well or better than the stats he displays in 5 seasons. He is also getting them in the cup and CL.

Short answer is keep playing him until he is getting more 6's than 8's.