Barcelona defender Oscar Mingueza says there was no atmosphere in the dressing room when Ronald Koeman was in charge.
The Dutch tactician was relieved of his duties as Barcelona manager at the end of October following the shock 1-0 loss to Rayo Vallecano.
Mingueza reveals the players were not happy under Koeman and felt the change in management was needed.
"The dressing room needed a change," Mingueza has told Esport3.
"There was no atmosphere. Players were not happy. And when you're not well and things don't turn out, you need a change.
"The team stopped trusting [Koeman's methods] and everyone tried to fix things on their own. We weren't good, neither individually nor collectively.
"When the dynamics aren't good, everyone does what they can but we lacked self-belief."
Xavi Hernandez, who replaced Koeman, begins his reign in charge with a LaLiga clash against cross-town rivals Espanyol.
Scroll through the gallery below to see Xavi's reported 10 strict rules at Barcelona