Mourinho had deal to succeed Sir Alex at Manchester United

Jose Mourinho revealed in a documentary that he signed a contract to succeed Sir Alex Ferguson as Manchester United manager in 2013 but tearfully turned back on the deal and returned to Chelsea.

The football world was rocked when the Scottish great announced he was retiring after overseeing a 13th Premier League title triumph during a spell of unrivalled dominance at Old Trafford.

United have failed to return to those heights since Ferguson stepped down, with successor David Moyes sacked after only 10 months in charge.