Frank McAvennie has raved about Celtic new boy David Turnbull and tipped him to become Scott Brown’s long-term replacement.

The Parkhead legend, speaking exclusively to Football Insider correspondent Dylan Childs, claimed that the 21-year-old is both a signing for now and the future in a deal that was simply “too good to miss”.

Turnbull watched on from the bench last weekend as the Hoops beat his former side Motherwell 3-0, thanks to goals from James Forrest, Albian Ajeti and Christopher Jullien.

The midfielder completed a move to Paradise late last month after Football Insider revealed that a £3.25million fee was agreed between the two clubs.

McAvennie insisted that the deal was too good to pass up on despite a wealth of midfielder already at the club.

“Lenny went for Turnbull because it was too good of a deal to miss him,” he told Football Insider.

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“He can walk into the team now but he is also one for the future. I said that this year is not one for prospects, they need players that can go right into the team – Turnbull falls into both categories. He could walk into that team and they would not be weakened in any way, shape or form.

“Turnbull will be there when Scott Brown finishes and maybe he will take over from him. He is a great option to have and they could not pass that one by.”

Brown, 35, is into the final 12 months of his contract in Glasgow but is still an integral part of Neil Lennon’s side.

The Hoops captain’s future beyond next summer remains unclear but an historic 10th consecutive league title, if achieved, may be a fitting end to an illustrious career at Parkhead.

In other Celtic news, it can be REVEALED that club chiefs are convinced star player is engineering big-money exit.