Angus Gunn is set for a scan to assess a muscular injury ahead of Middlesbrough’s upcoming Championship visit, after his first half exit in the 3-2 defeat to Leeds.

The ever-present Scottish international signalled to the bench he had an issue with his upper leg just past the half-hour mark of Saturday’s Carrow Road loss.

Gunn was assessed on the pitch before making way for George Long, who was beaten three times in the second half as Daniel Farke won on his first Norfolk return.

Canaries’ head coach David Wagner admitted the hosts had contributed to their own downfall, after leading 2-0 at the hour mark, and now faces an anxious wait on Gunn’s fitness for Boro’s visit on Tuesday, and the trip to Sunderland.

“It looks like a muscle injury. How serious it is? I can't say. We have to see. For sure, he will have a scan on Monday,” said the German. “But obviously it was serious enough in this game that he wasn't able to continue.

"With Jon McCracken we have him on a weekly loan so we can call him back, but I haven't thought about that (at this stage). 

"What really hurts is the situations we conceded because the first one, we were very sloppy in the final third, where we have to show composure. We defended the three against three quite well, to narrow the centre and give them the wider areas, but from the cross we conceded the own goal.

“Second goal, I like to give credit to the player. It was a quality shot. And the third one is just wrong decision making. It's a free kick and we had three against one, on one side of the pitch, and we decided to play a long ball and in the next phase we decided to go on the front foot and press rather than drop.

"We have to take it on the chin. But performance-wise, this was back to our normal self, good energy, good intensity, creating opportunities.

“We know how football works, you have to consistently perform on the level and then you will win games. And this is where we have to be focused on moving forward.”

Wagner accepts one league win in six is a long way short for a squad who expect to be challenging for promotion.

“The result hurts. It is disappointing to lose at home at home after being 2-0 up but, performance-wise, good, and this is I think the difficulty,” he said. “Not for me, but maybe for other people, because I'm the manager so it's my job to split this, to see on one side the result and feel that disappointment, but to see as well this was a good performance.

“I think we were very brave in ball possession, created our opportunities, were able to score. We conceded some chances as well because we faced a top quality side.”