Roberto Mancini's man-management style was to blame for his exit as Manchester City manager, according to former defender Danny Mills.
Mancini, 48, was sacked on Monday after three-and-a-half years in charge.
City chairman Khaldoon Al Mubarak said the club needed to "develop a holistic approach to all aspects of football at the club".
"There wasn't the togetherness between player and manager," Mills told BBC Radio 5 live.
"Basically, he just ignored players from day one. He was the manager, he made decisions, he made no attempt to have any sort of relationship with the players, didn't take them under his wing. It was very much, 'I'm the manager, I'll do my thing, I'll pick the team and then I'll disappear'.
"You speak to the players and you know there's a lot of discontent in that dressing room. They'll say it wasn't a particularly happy camp at times, there were a lot of different factions in that dressing room."
Mancini, who signed a new five-year deal last summer having won the Premier League title, has been involved in a number of high-profile altercations with his players since he replaced Mark Hughes in December 2009.
His most notable quarrel was in January when he was involved in a training-ground bust-up with Italian striker Mario Balotelli where photos showed the pair having to be separated by staff and team-mates at Carrington training ground.
In September 2011, the Italian said Carlos Tevez was "finished" at the club after accusing him of refusing to play as a substitute in the Champions League game against Bayern Munich.
After a disciplinary hearing, fines, a suspension, an unauthorised return to Argentina and an apology, Tevez returned to the City fold five months later.
Midfielder Samir Nasri criticised Mancini after the manager claimed he wanted to "punch" the Frenchman for his inconsistent displays earlier this year, while goalkeeper Joe Hart was rebuked for criticising the side following a 3-2 Champions League loss at Real Madrid in September.
After the FA Cup final defeat by Wigan, Mancini criticised the club for failing to publicly deny media reports identifying Malaga boss Manuel Pellegrini as his likely replacement.
Mills added: "You need to understand the players, you need to know what makes them tick. You have never heard the players come out and back their manager and that sticks in the mind.
"You cannot come out and criticise your players publicly. Arsene Wenger doesn't do it at Arsenal and Sir Alex Ferguson doesn't do it at Manchester United. We know he kicks boots, or give them the hairdryer, he might even have had the odd punch-up, but in public he protects his players.
"You have to ask why didn't those top players who they were linked with go there in the summer? They were in the Champions League, they were the champions of England, they pay more money than anybody else - why would you not go there unless it wasn't a happy place to be?"