'Ronaldo looked in the mirror and said he was better looking than Messi'

The rivalry between them is still going strong, but if Crouch's claims about what Rio Ferdinand reportedly told him on England duty are true, then it has been going on a lot longer than many thought. 

Long before the Portuguese star arrived in Spain and their rivalry began on the pitch, he was already concerned with what the Argentine was doing off of it. 

"Rio Ferdinand would tell us stories about how Cristiano Ronaldo would stand in front of the mirror naked, running his hand through his hair, and say, 'Wow. I'm so beautiful!'," Crouch said in his new book, which has been glimpsed at by the 'Daily Mail'. 

"The other United players would try to wind him up. 'Whatever. Leo Messi is a better player than you.'

"And he would shrug his shoulders and smile again. 'Ah yes. But Messi does not look like this...'"