But any concerns over the Colombian's mood were swept aside as he fired home the winner in a stormy 2-1 victory over Hibs.

The former Rangers striker was responding to Aiden McGeady's observations about Duran's body language after the forward was once again deployed on the right wing to accommodate the club's record signing.

Hogh endured another difficult afternoon and it was left to Duran to settle the contest after an own goal from Hibs had cancelled out Owen Elding's classy opener.

And Boyd believes Duran has done enough to mount a serious challenge for the central striking berth, backing him to force his way past Hogh in the pecking order.

Speaking to Sky Sports, Boyd said: “I can totally understand his frustration. If Celtic hadn't paid £11million for Kasper Hogh, would they continue persevering with him up front? Because right now he's offering absolutely nothing.

“When Camilo Duran plays through the middle, Celtic look a far better team. So yes, I can understand why he's frustrated.

“At the same time, he's scored another match-winning goal today. It's easy for us to sit here and say he's sulking, but he'll leave with the winner and he'll be happy with that.

“But I completely understand his point of view. If I'm the player scoring the goals and putting in the performances, and people are coming away from games saying I've been Celtic's best striker, why am I being moved out of position just to accommodate someone because of the transfer fee?

“I'll say it again, Kasper Hogh is offering absolutely nothing for me.”