Fernando Torres and Diego Simeone were embroiled in a bitter feud during the striker's emotional second spell at Atletico Madrid that rocked the club to its very core.
Torres' return to Atletico in 2015 was actually orchestrated by Simeone. The pair were team-mates in 'El Nino's' first spell at the club between 2003 and 2005 and there was hope he could offer his old pal something different up front.
But it wasn't long before an uncomfortable situation between Torres and Simeone began to develop in the Spanish capital.
Fernando Torres has spoken about his feud with Diego Simeone in his new biographical film
Simeone was the man behind bringing Torres back but their relationship quickly went downhill
Torres was given an increasingly reduced role by Simeone after his first season back
The first signs of their relationship fraying came when Torres was cast a supporting role for the 2016-17 season - despite netting 12 times the previous term and finishing the LaLiga campaign with six goals in eight games.
From that point on, things only got worse as Torres continued to play fewer and fewer games while Simeone began to criticise him publicly.
During one press conference, the Atletico boss said: 'It's the same with all strikers, he doesn't score, he doesn't talk to anybody and they criticise him.
'Kevin Gameiro doesn't score enough and they criticise him, Fernando doesn't score enough but he's the team idol, he's got a lot of fans no doubt about it and that's how he gets by.'
In the new Amazon Prime documentary Fernando Torres: The Last Symbol, their fractious relationship is laid bare.
Reflecting on his time at Atletico with Simeone, Torres said: 'I don't think he ever saw me as his starting striker. For me the most important thing was that I was where I was supposed to be. I wasn't too worried about the conditions.
He was adored by Atletico fans, having scored a glut of goals for his boyhood club in first spell
Things came to a head when Simeone started to criticise Torres in his press conferences
'What I felt was a great responsibility to the fans. I never asked Simeone for any kind of explanation because I know how he is. I don't know if it was something personal or professional or a bit of both.
'I understand it can get complicated for a manager to manage the return of a player like me. But at some point everything just came to a head. It just blew up.
'I could accept that reality that maybe I wasn't up to starting 40 matches of the season as the starting striker but I could never understand how he wouldn't even have me sitting on the bench for games.'
Torres' friend and personal advisor Antonio Sanz admitted he encouraged the striker to leave after Atletico lost the 2016 Champions League final.
Sanz said: 'I asked him why don't we leave? I don't