Kemar Roofe’s red card “killed” any chance of Rangers coming back against Slavia Prague in Thursday’s 2-0 defeat, according to Noel Whelan.

The former Aberdeen striker, speaking exclusively to Football Insider, insisted the 28-year-old’s “moment of madness” let his teammates and Steven Gerrard down.

Roofe was given his marching orders just after the hour mark, with the score at 1-0, after his high boot caught goalkeeper Ondrej Kolar square in the face.

The striker had come on as a substitute to replace Scott Arfield just six minutes earlier

Kalar was stretched off as a result of the challenge but Slavia netted shortly after to wrap up the tie.

Whelan admitted Roofe let Rangers down and suggested his enthusiasm got the better of him.

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“Look, it’s a striker’s challenge,” Whelan told Football Insider assistant editor Russell Edge.

“That’s the problem. Sometimes you get that enthusiasm and you want to change the momentum of a game. You’ve got to find that happy medium of control and controlled aggression.

“Last night, that was just rash, it was stupid and it killed their whole chance of getting anything out of the game. It really did.

“It’s moments of madness like that which lets the side down. It lets the manager down them but more importantly, lets the own player down as well.

“Not a great introduction to the game for Kemar. I’m sure he’ll look at that maybe curb his kung fu, karate kid from now on.”

In other news, Alan Hutton claims Nathan Patterson may already be a better right-back than he was.