Billy Joe Saunders: Tyson Fury won't see 30 without boxing

World heavyweight champion Tyson Fury will not see 30 without boxing, says fellow British fighter and friend Billy Joe Saunders.

Fury reversed an apparent decision to retire on Monday, saying he is “here to stay”.

The 28-year-old, who withdrew from his 29 October rematch against Ukrainian Wladimir Klitschko because of reported mental health issues, had written on Twitter: “I’m the greatest, and also retired.”

However, three hours later, Fury was back on social media to suggest his earlier claim had been a joke.

“Hahahaha, you think you will get rid of the Gypsy King that easy?" he tweeted. “Soon as I get better I'll be defending what's mine - the heavyweight throne.”

WBO middleweight champion Saunders told BBC boxing correspondent Mike Costello that Fury is “making decisions he’s not fit to make”.

“He’s mentally unfit,” the 27-year-old added.

“We need to get him back in the ring. If you take his boxing away, I honestly don’t think Tyson will see 30.”

This clip is from 5 live Sport on Monday 3 October 2016.