Kenny Miller reckons Michael Beale's team selection against Celtic will be fascinating - particularly when it comes to who is handed the starting striker spot.

The former Rangers striker insists it'll be "intriguing" to see whether Beale puts his faith in Alfredo Morelos or Antonio Colak at Celtic Park.

Or even if he could throw a curveball with suggestions of Fashion Sakala centrally and a false nine formation floated in the build-up to the powderkeg fixture.

For Miller, it comes down to how fit and driven Morelos is to perform for Rangers. The ex-Ibrox forward reckons the Colombian has proven the ability and workrate to hurt teams, but only when he's in the right condition physically and mentally.

While Miller suggests Morelos might be better suited to press due to his speed, the former Scotland frontman went on to state his opinion that Colak is working harder.

Speaking on the Go Radio Football Show, Miller said: "Morelos has still got it but it's about if he wants to show it. That's the choice he can make, but if you're talking about a fit Alfredo Morelos who is fully firing and Antonio Colak, I probably think for all other aspects of the game, I think Morelos has more pressing ability when fit and at it, more physical, he's more mobile, there's no doubt about it.

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"But at the moment looks like Colak is maybe working harder. So it's a question out there but I just think what is going on with Alfredo.

"Where he is going to be playing his football next year? He came to the club as a 20-year-old and it's something that has been constantly thrown at him, a lot of pressure on him, a lot of interest in him.

"Now he hasn't been performing at the best of his ability and Colak comes in. He found himself on the bench and he is not a good sub and I think everybody can see that, so it will be really intriguing to see Michael's team selection.

"If you get the right people about him and some control in the game, you might get more out of Alfredo or Colak. It's about what else can they bring to the game, who has more energy to put them under pressure and I think a fully fit Alfredo can do it better because he can do it quicker."