Speaking on Casemiro's role in improving Ugarte's game, Poyet added: "Casemiro could be very important for United in acting as a mentor for Ugarte. I said the same thing about Aurelien Tchouameni. I gave him his professional debut for Bordeaux at 18 when I was manager, he then made his move to Real Madrid and had the guidance of Toni Kroos, Luka Modric and Casemiro, you can’t ask for much more as a young midfielder.
"He had that time to adapt before going straight into the team, after a month Casemiro had left and Tchouameni was in the team! He hasn’t looked back since and is one of the best defensive midfielders in world football now. He had the guidance that prepared him for that, and you need to use these senior players in the right way to guide, whilst giving the young player the time to play. I can see the same situation with Ugarte being guided by Casemiro."