Roy Keane has hit back at Sir Alex Ferguson after the Manchester United manager appeared to have questioned his managerial ability.

The Scot said "(Roy) had an opportunity to prove himself as a manager too," after the Irishman criticised some of United's younger players following their exit from the Champions League.

The former United skipper has continued his war of words with Ferguson.

"If you want to question my managerial record, listen, you could question every pundit's managerial skill in relation to (Ferguson's) and we're all going to come up short," Keane told the Sunday Times.

"But I would also say that without players like myself, maybe he wouldn't have such a good managerial record because players who go down the punditry road, it's soon forgotten that we put bodies on the line for him."

Keane is currently working as a pundit for ITV following his departure from Ipswich in January.