Brazilian goalscoring legend Ronaldo has branded Sir Alex Ferguson 'disrespectful' after the Manchester United manager referred to the forward as 'the fat one' in comparison to Real Madrid superstar Cristiano Ronaldo.

According to the Daily Mail, the United boss distinguished the two Ronaldo's from one another by referring to the Brazilian version as 'fat' - something the former-Inter Milan and Real Madrid forward has not taken too kindly to.

United were knocked out of the Champions League following a 2-1 defeat to Real Madrid at Old Trafford, with Cristiano Ronaldo scoring the match-winner.

The last time the two clubs played in the Champions League, back in 2003, the Brazilian Ronaldo was the hero as he bagged a hat-trick, but Ferguson wasn't impressed with his recent weight gain - something Ronaldo was not happy about.

"He did not see me after One Measure," Ronaldo said referencing a weight-loss reality TV programme he recently appeared on.

"I have nothing to add on my old physical appearance. I regret how disrespectful he was when he referred to me, it was not something that befits a 'Sir'.

"I'm proud of what I achieved in football; I was the best in the world."

The World Cup record goalscorer constantly battled accusations of weight gain throughout his career, but the two-time Ballon D'Or winner was one of the most feared strikers in the game.

The 36-year-old retired at Corinthians in 2011, after a stellar career that took in PSV, Barcelona, Inter Milan, Real Madrid and AC Milan.

His hat-trick at Old Trafford in 2003 helped Real Madrid to a 6-5 aggregate victory. Ten years later and his namesake fired Jose Mourinho's side to the quarter-finals with the winner at his former club.

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