Jose Mourinho's style of management has constantly been brought into question throughout his trophy-laden career.
Winning is all the 'Special One' cares about and if any of his players aren't on the same wavelength, they'd better be prepared for an ear bashing.
His narcissistic ways have led to many public fall outs with players down the years, including Cristiano Ronaldo and Sergio Ramos at Real Madrid.
Juan Mata was also a victim of being ignored by Mourinho at Chelsea, as have been Bastian Schweinsteiger and Luke Shaw at Manchester United.
Mourinho very much divides opinions amongst his former players, but one thing he can't be faulted for is having a winning mentality.
He's managed at Porto, Chelsea twice, Inter Milan, Real Madrid and now Man Utd, yielding silverware at each and every club.
Mourinho never admits defeat and now some insight has been given into what kind of manager the Portuguese is when his side are losing.
Frank Lampard played under Mourinho for four years at Chelsea across two spells, winning the Premier League twice and becoming one of his most important players.
There good and bad times, of course, and speaking to Copa 90 earlier this week, Lampard recalled how Mourinho used to react in the dressing room at half-time when Chelsea were losing.
"When he first came to the club he changed my whole outlook on football," said the England international, per the Mirror.
"It wasn't so much tactically - he was great tactically - it was more self-confidence, how he dealt with me and how he spoke. We all know he has got that kind of arrogance and self-confidence.
"But it was one of those that even at half-time if we were losing or having a bad game, he'd come in and be like... He was first manager I ever had that didn't come in and say 'what you doing?' and throw teacups at you.
"He would be like, 'Don't worry lads, we are going to win this. We are 2-0 down but this is going to finish 3-2'."
That's what makes Mourinho special. Rather than give his players the hair dryer treatment like Sir Alex Ferguson, he told them not to worry and that they will win.
The confidence that brought in the Chelsea dressing room enabled the Blues to play without fear and keep fighting even when the chips were down.