Shane Duffy is not in Efe Ambrose's league at Celtic as the Irishman has been 'rank rotten', says Kris Commons.

Duffy has been criticised by a section of the Hoops support for his performances since joining on loan from Brighton, and ex-Celts midfielder Commons reckons the big man has been poor ever since joining up at Parkhead.

Ambrose, a former teammate of Commons', was never short of critics during his time in Glasgow. But Commons insists he'd happily have his old pal over Duffy 'all day long' as Duffy has been error prone in a number of games, costing his side dearly. "Duffy just looks like an accident waiting to happen," Commons claimed. 

"A bomb scare and that's a criticism which used to be levelled at my old teammate Efe Ambrose. But I tell you what. On current form, I'd take Efe over Duffy all day long. Some people have branded him the Irish Efe Ambrose but that's doing Efe a real disservice.

"He could be outstanding on his day, like he was in the Champions League victory against Barcelona in 2012. Yeah, okay, he took too many chances and sometimes made supporters nervous. But at least with Efe you knew there was a player in there.

"He was quick, had great recovery pace, great athleticism and he could bring the ball out from the back. I've not seen any of that yet from Duffy. He's been rank rotten from the minute he walked through the door."

Speaking to the Daily Mail, the former playmaker added: "Listen, he's a proven operator in the English Premier League. At 28 years old, there's still a chance that he might come good eventually. But he needs to get himself up to speed and sharpish. With so much riding on this season, Celtic can't afford to be carrying any passengers."