It's all celebration for Wales at the moment following a historic victory over Northern Ireland on Saturday that put the Dragons into the quarter-finals of Euro 2016, but the concern once the jubilation wears off will be the status of captain Ashley Williams.

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The influential central defender clattered into teammate Jonny Williams in the second half of Saturday's contest, and came out of the collision clearly in discomfort, unable to lift his left arm.

"Ash is a bit tender with his shoulder," manager Chris Coleman said post-match. "The next 24 to 48 hours will be key, whether it's bruising and just impact, or whether there's damage to any ligaments or a tear in his muscle. Hopefully not that.

"We won't really know until tomorrow, but he was struggling, couldn't move his arm.

"I was going to take Ash off, had got James Collins ready to come on. But he said he was okay to continue and I trust my captain."

Williams finished the match, but was seen sporting both a sling and heavy bandage on his shoulder in the dressing room.

A very happy #Wales dressing room! #EURO2016 A photo posted by UEFA EURO 2016 (@uefaeuro) on Jun 25, 2016 at 11:47am PDT

Wales will meet the winner of the Round of 16 clash between Belgium and Hungary in the next round.