When all is said and done, Jose Mourinho will look back on his career with great pride.
He’s managed some of the world’s biggest clubs, winning titles in Portugal, England, Italy and Spain, and has a couple of Champions League winners medals too.
But one moment in his career that won’t be reflected on too fondly is the 2015-16 season with Chelsea.
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Mourinho’s third season at Stamford Bridge in his second spell at the club will go down as one of the biggest nosedives in Premier League history. Chelsea started last season with nine losses in 16 league games and Mourinho was sacked in December, just seven months after winning the title.
Much has been made about a presumed fallout with Eden Hazard and Cesc Fabregas but Sir Alex Ferguson doesn’t think Mourinho should have returned to Chelsea in the first place.
Having enjoyed a successful first spell at the club from 2004 to 2007, the Portuguese coach returned to west London in 2013.
And Ferguson thinks Mourinho shouldn’t have allowed his heart to rule his head.
"I thought Jose was wrong to go back to Chelsea, I really do," the legendary former United boss told Sky Sports, per Goal.
"I think it's always difficult going back to somewhere for a second time.”
It’s easy to forget, however, that Mourinho won the Premier League and League Cup in 2014-15. Chelsea were far and away the best team that season, losing only three games and winning the title by eight points.
And, though 2013-14 brought no silverware, the Blues reached the semi-finals of the Champions League.
So Mourinho’s second spell at the club wasn’t entirely disastrous.
Ferguson thinks United is right for Mourinho
But now, Chelsea are a rival to Mourinho as he prepares to turn Manchester United into a force once again.
Ferguson, who spent 27 years as United’s manager, thinks Old Trafford is the perfect spot for Mourinho.
"The ability, charisma and personality, his success is high, won a European Cup twice with different clubs, won a Europa [League] with Porto, winning titles with all the teams he's managed. His record - you can't ignore that," the Scot added.
"I think Manchester United is the right kind of club for him, I really do. I think we'll do well."
Thousands of United fans around the world hope Ferguson is right.