Inter Milan boss Jose Mourinho has hailed Manchester United manager Sir Alex Ferguson as the greatest.
"He is a super manager and a victory or defeat in this moment of his career doesn't make him any better or any worse - he has had a great career," said the Portuguese.
"But of course if he wins on Wednesday it would make him the greatest club manager.
"Sir Alex has made a super team. Three Premier League titles in a row and two Champions league finals - that is really top.
"They have quality and experience, with Rio Ferdinand, Nemanja Vidic, Cristiano Ronaldo and Wayne Rooney. They have absolutely everything as a team: strength, mentality, speed, magic, solutions.
"Beating Arsenal in the semi-finals (of the Champions League) didn't impress me too much. It is normal.
"But three Premier League titles and two Champions League finals, you need no more words to explain how strong they are."