Arsene Wenger
Ferguson and Wenger had a great rivalry around a decade ago. It was either United or Arsenal which came away with the Premier League title for a long time until Abrahimovich took the reins at Chelsea.
During one such season, Sir Alex made a comment about the playing style of Arsenal, which he thought was not good enough. He went on to say that United were the better team and they would come away with the title.
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After winning the premier league and the FA Cup, Wenger had said this about Ferguson's team:
"Everybody thinks they have the prettiest wife at home".
While a lot of people think that Mourinho is the one who takes ugly jibes at Wenger, this is what Wenger had to say about Mourinho after a season which saw Chelsea winning the Premier League title:
"He is out of order, disconnected with reality and disrespectful. When you give success to stupid people, it makes them more stupid sometimes and not more intelligent."
But nothing beats this comment of Wenger on Reyes, who was looking for a transfer in the 2007-08 season:
"It's like you wanting to marry Miss World and she doesn't want you, what can I do about it? I can try and help you, but if she does not want to marry you, what can I do?"
