Yep I agree- sell them. It'll take several seasons to get to fully realize their potential and even then, the best they'll be is "excellent players". Sell them off (I sold Pogba to Real for 5 mil pounds and Ravel for 3 mil to Chelsea) and use that money to buy Mateo Kovacic. Mateo Kovacic turns out better than either of them could ever be and unlike ether Pogba or Ravel, Kovacic's stats are actually strongly focused into areas that make a good AMC/MC.