Real Madrid coach Jose Mourinho has questioned if Manchester United can win the Champions League again.
Mourinho has spoken of his admiration for Sir Alex Ferguson but says United do not have the best tactical approach for the Champions' League, with winning the Premier League most important at Old Trafford.
Mourinho told the Mirror: "Sir Alex is a great man, a great manager with a lot of respect from everybody.
"They play the English way, hard and physical. Europe is different. Tactics, strategy, the players you have, the players you pick, it is very different to domestic club football.
"Manchester is a club who are proud and perhaps look at winning the League title as more important than anything else.
"To be a truly great club, you have to win all the trophies..all the European trophies. That shows that you are the best, you know how to win at all levels.
"For English clubs, it is more difficult to change their systems. But for me Manchester (United) is a great club. I don't think their style can change for Europe."
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