Roy Keane and Micah Richards' frank disagreement on Manchester United's Treble compared to Man City

Roy Keane and Micah Richards disagreed on their comparisons between the Treble-winning Manchester United side of 1999 or the current Manchester City team who could match that feat this season.

United won the Treble in the memorable 1998/99 campaign. They clinched the Premier League crown and beat Newcastle United in the FA Cup final. And of course, they came from behind in the legendary Champions League final of that year in the Camp Nou against Bayern Munich. Teddy Sherringham and Ole Gunnar Solksjaer's stoppage-time strikes ensuring a 2-1 comeback victory and the Treble being secured.

City have already claimed one third of that with the Premier League crown. Their fifth title in six seasons was confirmed after second-placed Arsenal suffered a 1-0 loss on the road to Nottingham Forest.

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City take on United in the FA Cup final next month, before heading to Istanbul to face Inter Milan in the Champions League final. A huge couple of weeks now follow for Pep Guardiola's side.

Naturally with City having the potential to match United's achievement, the question has been raised as to which side was the better one. That very question was posed to both Keane and Richards on Sky Sports ahead of City taking on Chelsea.

Beginning, Keane said: “I don’t mind watching good teams and I like to give teams credit where it’s due and I’ve no problem doing that with Man City over the last few years. I think they’re a brilliant team and I wouldn’t begrudge them the success.

“Micah thinks they’re the greatest team of any sport in the history. They’re very good."

Asked where City rank compared to the 1999 Treble-winning United side he