Get the latest United updates, transfer news and analysis delivered straight to your inbox every day for free Ruud van Nistelrooy has admitted he was "shocked" by how calm Roy Keane would act in his preparations for Manchester United matches.
The United captain had a reputation for being short-tempered on the pitch and that has carried through into his punditry with Sky Sports.
Keane is regarded as one of the greatest leaders in Premier League history, though Van Nistelrooy has explained how would be left speechless by the Irishman's pre-match preparations.
The legendary Dutch striker explained how Keane could be incredibly laid back before a game, only for a switch to go off as soon as the first whistle was blown. "For me, he led the team
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