Benfica chief Rui Costa says they will only sell Angel di Maria for his £22 million buyout clause.
Inter Milan and Real Madrid are chasing Di Maria and Rui Costa said: "Di Maria is a player who has a very important future ahead of him. He's a very important player for us, from the point of view football and the financial point of view.
"He has a clause of £22 million. So, the team that arrives with £22 million can expect to take Di Maria."