Matt O'Riley couldn't help but deliver his true thoughts on his missed penalty attempt during Celtic's win over Rangers in the sides' Scottish Premiership encounter.

And that results in the Celtic Player of the Year letting slip with an X-rated expletive live on TV as he spoke to Sky Sports after the game.

The attacking midfielder scored his side's opener as they took a big step towards retaining the Premiership title for a third successive year. 

John Lundstram then scored an own goal to double the Hoops' advantage, before Cyriel Dessers did give the visitors a lifeline prior to the midfielder's sending-off.

O'Riley was brought down inside the box by Mohamed Diomande in the second half and while it was a debatable decision, Willie Collum opted to point to the spot.

The player was shut out by Rangers goalkeeper Jack Butland though, meaning his tally was the day remained at one, as Celtic had to see the rest of the game out at 2-1.

"It's very important, with two games left," the 23-year-old admitted. "We're six points clear. Not much more to say.

"I think we made it a little bit hard for ourselves again. I probably helped with that with a pretty s*** penalty."

After being excused by Sky Sports reporter Luke Shanley, he continued: "It was very important (the timing of the goal). We started the game well. I had a few chances with the free kick and the other one from outside of the box. 

"I was just finding my range. Luckily that one went in."

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And given the chance to elaborate on the failed spot kick, he was asked what he was thinking. 

"He responded: "Too much, to be honest. I practiced it yesterday and I probably just got in two minds when I was over it. 

"So, more to learn from again. I won't do that again.

"I kind of had a plan - I was waiting for him (Butland) to move. He stayed for quite a long time. Yeah, I probably needed to have slightly bigger balls than I did."