Todd Cantwell looks unhappy and must be replaced by Tom Lawrence for Rangers against Celtic; that's the opinion of former Ibrox goalkeeper Cammy Bell.

The pundit reckons Cantwell is lacking form for Rangers which has led to him being "a little bit unhappy".

However, Bell is confident Cantwell could be replaced by Tom Lawrence in the starting line-up for the crucial trip to Celtic Park this weekend.

Lawrence came off the bench for Rangers against Kilmarnock on Sunday and netted in the 4-1 win.

And Bell reckons Lawrence would provide the necessary "control and spark" for Rangers at Parkhead as he claimed Cantwell hasn't done enough in recent weeks.

On Clyde 1 Superscoreboard, Bell commented: "It's difficult, they've got injuries but they can't dwell on that, they need to deal with the injuries they've got.

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"A positive from the weekend was Tom Lawrence coming back, I think he's a brilliant, brilliant player.

"Todd Cantwell's not done enough for me again. He just looks a little bit out of form, a little bit unhappy at the moment. I think Lawrence brings a little bit more control and spark."

Another player Bell is desperate to see start on Saturday is Dujon Sterling with the 24-year-old going from utility man to key player under Philippe Clement.

Bell added: "Sterling's got to start for me, you get a good, solid performance from him every single game so you've got to find a place on the pitch for him.

"Philippe Clement's got a big job on his hands because he's got to find a team and formation that's gonna win him the game."