Chelsea boss Mauricio Pochettino admits he's enjoyed working with Enzo Fernandez in preseason.
The Argentina midfielder has again impressed on tour of the US.
Pochettino told chelseafc.com: "Always it is a pleasure with Enzo.
"He is very humble, he is a fighter also and he's a fantastic player, world champion with Argentina and I am so proud of him.
"I am Argentine also and I shared happiness when they won the World Cup. It is a pleasure when you have a player like him in the squad."