The two managers have long been adversaries, but could the Special One benefit from taking a leaf out of his rival's book?
Jose Mourinho has been urged by Tim Sherwood and Liam Rosenior to stop complaining about Manchester United's transfer policies and make the best out of the players he has.
Mourinho has spent heavily since arriving at Old Trafford at the start of 2018, but the current transfer window was relatively subdued for the former Chelsea and Real Madrid boss.
Fred, Diogo Dalot and Lee Grant are the only new arrivals this summer, as United head into the new season with a squad virtually unchanged from that which finished distant runners-up to Manchester City in the last Premier League campaign.