Rangers could sorely miss Jermain Defoe as they attempt to stop Celtic claiming a historic 10th consecutive SPL title, according to Noel Whelan.

Speaking exclusively to Football Insider correspondent Jason Jones, Whelan delivered his verdict as Defoe suffered another injury set back.

After picking up a hamstring knock against Motherwell in pre-season, the 37-year-old aggravated the injury in training last week.

Since joining the club on loan in January 2018, Defoe has scored 25 goals in 52 games for the light blues.

The move became permanent this summer with Defoe signing a one-year deal.

Asked by Football Insider whether Defoe may suffer recurring injuries this season, Whelan said: “That’s probably why they brought in Kemar Roofe and they’re looking at other strikers coming in before the end of transfer window, if Morelos does go.

Subscribe to Football Insider TV now

“I’ve got nothing but admiration for Jermain Defoe. He’s been one of the best strikers in the Premier League for a number of years.

“It is worrying because we’ve seen what a quality player he is. In pre-season he was banging in the goals and looked very sharp.

“If you could get a fit Jermaine Defoe for three quarters of that season they’d be up there challenging to the end.

“He’s the kind of player that can win you championships but you’ve got to keep him fit. It’s difficult to do that when you get those little niggles.”

In other news, Football Insider can reveal Rangers have accepted a six-figure bid for midfielder once described as a “future captain”.