INVERNESS manager Richie Foran has called on referees to show "bravery" after the biggest talking point of his side's 2-2 draw with Celtic.

With the game locked at 1-1 in the first half after Tom Rogic's opener for the visitors was cancelled out by Billy King, Caley Thistle midfielder Ross Draper went to ground inside the Celtic area after a challenge by the back-tracking Erik Sviatchenko.

But referee Don Robertson ignored what appeared to be a strong penalty claim.

Foran thought the challenge was outside the box, but claimed the official still should have taken action.

He said: "I think it is outside the box, it is a clear free-kick which leads to a clear sending-off.

"It changes the whole outlook of the game, down to 10 men and gives us a boost and it is a disappointing decision.

"I think that's when you need brave referees.

"Ross has pushed the ball in front of the player and out his body in front of him and has been wiped out.

"It was clear for everyone to see.

"We had a chat and he didn't think Ross had control of the ball.

"In fairness, we have the luxury of seeing it back on television and he has made the wrong decision."

Inverness were forced to call on goalkeeper Owain Fon Williams on numerous occasions after Scott Sinclair's 32th-minute strike put Celtic in front, with the Welshman's second-half performance in particular earning him the man of the match award.

With Celtic continuing to create chance after chance, Fon Williams produced stunning saves to deny Kieran Tierney, Moussa Dembele and Callum McGreggor, before substitute Alex Fisher stunned the Scottish champions with a headed equaliser a minute from time.

Fon Williams said: "It's always a difficult match against Celtic but the boys battled on.

"We rolled our sleeves up and we got the point which we're delighted for.

Asked about the penalty incident in the first half, Williams replied: "It was quite far from where I was standing in my box. But it did look like a penalty to be fair."