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Jonjo Shelvey became involved in a post-match confrontation with a furious Swansea fan after the Welsh club's shock FA Cup defeat to Oxford.

The England midfielder went to applaud the visiting fans at the end of the game but then reacted to abuse from one supporter.

The former Liverpool star then appeared to gesticulate to meet the gentleman in the car park to continue the frank exchange of views.

The angry flashpoint at the Kassam Stadium could increase the chances of his departure with Crystal Palace interested in his £10m signature.

(Image: Huw Evans Agency) (Image: Huw Evans Agency)

Interim manager Alan Curtis said: “I genuinely did not see it. I saw him go over to the fans and I thought everything was okay. The suggestion is some of the crowd were having a go at him but, again, I genuinely did not see that.

"I heard the crowd sing his name a few times during the game so I do not know what the reaction was. I did not see it and have not had a chance to speak to him as he has gone for a drugs test.”

Oxford United vs Swansea: Best pictures

For his first match after being give the manager's job till the end of the season, Curtis made 10 changes, including recalling Shelvey.

“His performance was a bit like the team, he started poorly and got better,” he said. “But we expect more from Jonjo, it is as simple as that. We know the ability he has got, and if he does not play at those standards everyone starts to point fingers. He is disappointed himself but that is something we have to work on.

(Image: Ben Hoskins)

“The result is hugely disappointing, the only time we looked any sort of team was at 3-1 down, and it was far too late by then. All credit to Oxford, they were excellent today. We knew they were a good footballing team and we felt that might suit us.

"But they had more energy than us, they passed the ball better and we did not show anything like what we think we are capable of. We made changes today, but we made similar changes at Palace and got a battling draw. So today was hugely disappointing.”