Rio Ferdinand has told The Sun that David Moyes' approach to him at Manchester United caused friction between the pair.
The QPR centre-back was in and out of the side under Moyes last season, and rumours abounded that the defender had failed to buy into his manager's methods, and vice versa.
Ferdinand has suggested it was a clash of philosophies, himself not taking well to being re-taught the basics.
He said: "The best relationships between players on the pitch are never forged mechanically, they just click.
"Alex Ferguson understood that about me and Nemanja too. In fact, the only manager who thought he should tell me how to play with another centre-back was David Moyes.
"I think it’s fair to say I wasn’t having that."
Having been used to one way of playing under Ferguson for a decade at Manchester United since signing in 2002, it was always going to be difficult for him to re-adjust at the age of 35.
Now a year older it is also clear at QPR he has lost a step, and on the decline it was going to be even harder to adapt to new methods.
Moyes' failure to win over senior players like Ferdinand was however also part of his own downfall. It would have led to disharmony in the dressing room, which was evident on the pitch at times last season as the Red Devils achieved their worst ever Premier League finish.