Samuel Eto'o and Pep Guardiola only worked together for one season at Barcelona but it certainly wasn't short of success.
The Cameroonian starred in one of modern football's most formidable attacking triumvirates alongside Lionel Messi and Thierry Henry as the Catalans romped their way to the treble.
It was the mother of all debut seasons for new manager Guardiola and Eto'o himself ended the season in style with a goal against Manchester United in the Champions League final, raising his tally to 36 for the year.
The summer of 2009 brought that all to an end, though, when Eto'o became a pawn in a swap move for Zlatan Ibrahimovic.
The Swede may have been the more exciting, younger model but it was nonetheless surprising that a Barcelona staple of half a decade was reduced a mere makeweight.
Things all became clear in 2014, though, when Samuel Eto'o delivered one of the most honest interviews you're likely to see and it's fair to say Guardiola didn't emerged unscathed.
The criticism draws comparisons to the problems raised by Ibrahimovic over recent years with the Manchester United striker having rinsed the Spaniard in his autobiography.
It goes to show that the seemingly impeccable coach incubating champagne football at Manchester City isn't flawless and ruffled his fair share of feathers in his early years.
Eto'o explained: "Well I'll first remind you that Guardiola was never a great player, he was a good player. It's true, it's true. I told him.
"I had an offer to go play six months in Uzbekistan where they would pay me $26 million and in his office he said: 'Oh Samuel, that's going to be good for you, go there.'
"And I told him: 'the one that will make you win is Samuel Eto'o, but you will come and ask me for forgiveness.'"
Eto'o then went onto speak of an incident where he felt Guardiola disrespected him during the final days of his Barcelona spell.
"We were in the locker room and he says before the game: 'Okay we are going to change numbers.'
"Everyone says: 'oh the coach does this now? Surprising.'
"He says: 'Thierry, you take Samuel's number nine and he'll wear number 14.'
"Everyone was surprised and that was a total lack of respect and I couldn't admit that."
Low and behold, Eto'o was moved on and Guardiola continued to romp his way to trophies.
Eto'o's move to Inter Milan that summer was far from unsuccessful, however, and yanking the Champions League trophy from the man who had disrespected him is pretty good revenge.
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