When Egos Collide: The 7 Biggest Feuds Between Players & Managers in Premier League History

Managers and players can have extremely volatile relationships with each other. 

When results are positive there is often no tension between the coach and his players, but when the outcome of games become worse and the manager's job is questioned, the relationship between a manager and his players can sour.

Here are six of the biggest bust ups between players and managers in Premier League history.

7. Ruud Gullit and Alan Shearer

After a succession of poor results, Newcastle United boss Ruud Gullit decided to drop Toon Army favourite Alan Shearer for the derby day clash with Sunderland

Newcastle subsequently lost the fixture 2-1, and this proved to be the death knell in Gullit's stint as the club's manager. 

During the fallout of his decision, Gullit reportedly branded Shearer "overrated" and "a rotten apple". Ouch.

6. Antonio Conte and Diego Costa

Diego Costa was Chelsea's top scorer when rumours emerged of interest from a Chinese team who were willing to make Costa the highest paid player in the world. 

These rumours unsettled the Spain international, who reportedly became involved in a training ground fight with Chelsea staff. 

Antonio Conte was forced to step in to separate Costa and the fitness coaches, reportedly telling Costa to "go to China."

5. Roberto Mancini and Mario Balotelli

While at Manchester City Mario Balotelli was infamous for his poor behaviour and often grabbed the headlines because of it. 

Balotelli frequently missed games for the Citizens due to suspensions and was often involved in questionable antics off the pitch. 

While training, a poor tackle from Balotelli led to manager Roberto Mancini manhandling the striker, with the two having to be separated by staff and teammates.

4. Roberto Mancini and Carlos Tevez

During Mancini's reign at Manchester City he was involved in another falling out with star striker Carlos Tevez. 

The feud began when Tevez refused to warm up during a Champions League fixture against Bayern Munich and threw his bib at the City boss. 

This led to Mancini claiming that Tevez would never play for him again, while the Argentine argued that he was being "treated like a dog."

3. Alan Shearer and Joey Barton

After a poor season, Newcastle United turned to Alan Shearer in the hope of saving their Premier League status. 

Shearer made a bold call as boss, reinstating Joey Barton after his recent release from prison. The risk failed and Barton was sent off against Liverpool for a poor tackle. 

When the Newcastle boss confronted Barton over his actions the midfielder unleashed a string of obscenities whilst questioning Shearer's managerial abilities, and also attacked the Magpies legend on Twitter.

2. Tony Pulis and James Beattie

Following a 2-0 defeat to Arsenal in 2009, Tony Pulis asked his players to report for training on Monday morning. 

However, James Beattie reminded the Stoke manager that he had given the players the Monday off due to a Christmas party. 

This prompted Pulis, who was wearing a towel, to try to headbutt Beattie. While being separated the towel is rumoured to have fallen, resulting a naked Pulis being pulled away from his striker.

1. Sir Alex Ferguson and David Beckham

In the aftermath of a 2-0 defeat against Arsenal in 2003 the Manchester United boss voiced his concerns about David Beckham losing focus because of his celebrity lifestyle. 

In the midst of his signature hairdryer treatment, Alex Ferguson kicked a boot at Beckham which left the England international with a cut above his eye. 

The same year Beckham left the Manchester club for Real Madrid.