As reported by 'GloboEsporte', the environment in the dressing room is tense. Apparently, the squad do not see eye to eye with Valverde and his methods.
In fact, reports in Brazil stated that sources close to the Barcelona players assured that the one in charge in the dressing room and in training sessions is Messi, with Luis Suarez his right-hand man.
The institutional discomfort has affected the players. The adverse results at the beginning of the season have created a dour ambience which is very hard to revert.
The situation is similar at times to the one endured by Tata Martino, but in that case Messi's 'dictatorship' was tolerated by the Argentinian manager, something which doesn't seem possible with the current boss.