Paul Lambert was a failure at Aston Villa and Ipswich Town so there is no guarantee he would not be a failure if he was to become the next Celtic manager, according to Danny Mills.

Speaking exclusively to Football Insider, the former England and Leeds United defender called on the Hoops to appoint ex-Huddersfield Town boss David Wagner instead.

This site revealed last week Lambert’s is privately keen on the Celtic post despite public protestations to the contrary.

The 51-year-old left Ipswich at the end of February with the club set to be taken over by a new owner.

Mills does not think he would be a good fit at Parkhead and suggested Wagner would be a smarter appointment.

He told Football Insider correspondent Connor Whitley: “They just need to find the right manager with the right ideas.

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“He’s been around, it didn’t really work for him at Villa, it didn’t really work for him at Ipswich.

“Maybe they need to go down the younger route of bringing in a fresh manager with fresh ideas.

“We’re talking about managers who have tried and failed. Why would it suddenly work at Celtic? 

“Surely you want somebody on the up, not somebody on the down. Finding someone like that is not always easy. How much money have you got to throw at it? What sort of player can you attract? What’s the budget? Can you improve the players?

“Celtic aren’t fishing in the biggest pond.

“I think David Wagner. By all accounts, he’d like to come back and coach in the UK ideally the Premier League or Football League.

“He’s a manager who has done good things, he knows how to transform a football club on a relatively tight budget. Would that be a bad move?

“He has experience of the English game and the Scottish game is not too dissimilar.

“I’m sure he would love to take that job and somebody like that could be a really good fit.”

Football Insider revealed last month that Wagner, 49, is keen on the Celtic job.

In other news, Celtic have opened talks with a 44-year-old over a director of football role.