I think this guy will be a long term feature in Madrid's midfield, and likely a key one in the future. I have been thoroughly impressed from his performances against ManU and Juventus - he has silky smooth passing ability (very reminiscent of Kroos in his style), great mind and eyes for a playmaker, and also some pretty decent size/physicality and hustle. I don't know if he will stay for the season, but if it was up to me he would. I see him as Kroos' understudy, just as Llorente is Casemiro's and Ceballos is Modric or Kovacic's. The dilemma for me is between the two Croats. Do we extend Modric's contract and risk the departure of a midfield tour de force in Kovacic, or sell Modric for a fee below his value and go full youth? If its the latter, Valverde would become even more important and his development will accelerate. Either way I wouldn't loan him again, he already looks good enough to be a rotation midfielder for this team.