Chelsea striker Alvaro Morata would welcome Real Madrid midfielder Isco to Stamford Bridge.
Morata is close to his former Real teammate.
He said: “But I think that right now he has one of the most important roles at Madrid. In the national team he is also key.
“I think he is unstoppable when he feels important. The whole world has seen it since he took the reins at Madrid.
“He is the most important player at Real Madrid and in the national team. He changes the games, he makes the difference. He dances with the ball. Furthermore, he is my friend.”