The Uruguay midfielder was superb in an outstanding team display on Sunday.
Emery stated: "He's very young, it's his first season here at this level but he was playing in Italy which is a very hard competition also.
"He is playing also with his national team, against big teams. And here, I think with his process he's doing very well. The first is his humility to work every day, to listen, to learn. He is playing today in the middle, then right in the 4-4-2 and his performance is the same.
"I think his career is just starting and we want to do it with him, he can do it with us, giving us and giving him the best performances at the best level."