Jose Mourinho's time at Manchester United came to an end last December for a number of reasons.
He'd reportedly clashed with some big-name players, and evidence of that split has been clear on the pitch this season.
A 3-1 defeat at the hands of Liverpool was the final straw, and Mourinho was gone before Christmas.
His tenure at Old Trafford though, was far from a disaster in terms of just results.
In two and a half years at the club, the Portuguese boss delivered two trophies and had a win percentage of 58.3%.
However, the style of football he demanded quickly became a talking point and for some fans, it became a problem too.
A CHANGE OF STYLE
Under Mourinho, the Red Devils played with a pragmatic, defensive philosophy. They had just one goal - to win at all costs.
Performances were certainly contrasted to those under the likes of Sir Alex Ferguson, and many fans hadn't seen that kind of style played at Old Trafford before.
Following the Special One's departure, Gary Neville has been reflecting on his time in charge.
And he's offered a blunt warning to any manager who wants to come in and change the ethos of the club like Mourinho did.
"No one should ever be allowed to enter Manchester United's training ground or Old Trafford ever again to shape their own philosophy. That is done," Neville said, speaking on his Sky Sports podcast.
"Manchester United's philosophy is so deep and so meaningful, it's like Barcelona's and it's like Ajax's.
"At Manchester United you play fast, attacking football in an entertaining way. You bring young players through and give them belief. And you win.
"What I have found difficult over the last seven years is the breach of philosophy. Yes, I think young players have still played, but it seems that they've allowed managers to pull the club from pillar to post."
It's clear that Neville believes deeply in United's identity, and his argument that managers like Mourinho, and even Louis van Gaal before him have damaged that, is hard to disagree with.
Thankfully, under Ole Gunnar Solskjaer, it seems that for the first time since Ferguson retired, United may be returning to their famous philosophy.