In Prepare to Lose: the Mourinho Era, respected El Pais journalist Diego Torres claims Mourinho saw Sir Alex Ferguson as a friend and "felt betrayed" by the Scot when he was overlooked in the English champions' search for a new manager.
Mourinho's adviser, Eladio Parames, took to the Portuguese press to categorically deny the allegations.
"This story does not have any sense," he is quoted in O Jogo.
"It is completely false. It has no head or tail."
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