Mourinho fears United have lined up Zidane as his replacement
But he told the Portuguese that his representatives had merely been sounded out over his thoughts of taking over at the club.
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Instead of allaying Mourinho's fears, it has left him believing that he is likely to be replaced by Zidane.
According to The Sun, Mourinho now has just a week to show the United hierarchy that he is the right man for the job.
He has two games – the first Tuesday's Champions League visit of Valencia, and the game against Newcastle United on Saturday – to convince Ed Woodward to keep him on.
Gary Neville tweeted implicit criticism of Woodward and the Glazer ownership when he stated that those above Mourinho were to blame for the problems since the departure of Alex Ferguson:
"It's not the manager, it's the lack of football leadership above him. They are bouncing all over the place with no plan!"