How the tables have turned since the Sir Alex Ferguson days at Manchester United.
The Red Devils are no longer the force they once were under the perennial title-winner, and following his departure in 2013, they've finished 7th, 4th, and 5th.
It hasn't helped that they've lost some massive figures in the dressing room, with Ryan Giggs and Paul Scholes having also retired.
'Fergie time' has been another big loss, though despite that reputation, it would be an understatement to say that the Scotsman didn't always see eye to eye with the officials.
And so, after the failed experiments of David Moyes and Louis van Gaal, the United legend has found the perfect successor in the form of Jose Mourinho.
The Special One was absolutely seething with Michael Oliver's decision to send off Ander Herrera in the FA Cup quarter-final against Chelsea, which his side ended up losing 1-0.
The Blues may have been the better side, but the midfielder's dismissal clearly changed the game.
Oliver under fire
"Mr. Michael Oliver - a referee with fantastic potential," Mourinho said, per the Telegraph.
"Manchester United were a bit unlucky. In four matches (with Oliver), three penalties and one red card in such an early moment of the game but again I cannot change that."
Now, in the referee's defence, all three of the penalties he's given against United this season - for Watford, Everton, and Liverpool - were hard to argue with.
The Herrera red card was soft, but not all of his decisions against them have been that unreasonable.
Yet, never one to shy away from an excuse, Mourinho has called him out. It's going to make things very awkward for Oliver next time he's asked to take charge of one of their games.
Fergie responds brilliantly
The Portuguese boss isn't the only one who's unhappy with him.
After 60 years in football, you'd think Fergie would have learned to accept these kind of decisions. Not a chance.
Unsurprisingly, the racing fanatic has been at Cheltenham this week, and when asked what he thought of Oliver's performance, he joked to BBC 5 Live:
"I wish I could swear about the referee but I won't!"
If anything, they should be grateful he didn't send off Marcos Rojo too for what looked like a stamp on Eden Hazard.
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