Rio Ferdinand says Real Madrid star Cristiano Ronaldo was a "show pony" when first joining Manchester United.

Ferdinand believes he developed his game considerably during his time at United, shaping him into the finished article you see today.

"When he came to Manchester United, he was a show pony," Ferdinand told BT Sport.

"He wanted to do skills, he wanted to show people how good he was and take people on, take the mickey out of full-backs.

"Then he realised it was about end product and to become the best player in the world it would be all about purely scoring goals, or setting goals up for others and having an impact on games. He's forced himself to become that guy.

"He's been relentless season upon season, raising the bar. That's greatness right there."