​Newcastle United boss Steve McClaren revealed his concern for Siem De Jong in training this week, when he received a poke in the eye and was subsequently rushed to hospital with blood gushing from his eye.

​Goal reported that there was a real worry from McClaren that the former Ajax captain could have potentially lost his sight.

"It was just in training and he accidentally got poked in the eye," McClaren began.

"I wasn't here, but he went down screaming. So they said 'Let us have a look at your eye' and there was blood pouring from it.

"He wears contact lenses, and one of the contacts had come out and gone in his eye.

"(There was) a massive danger, a big danger (of losing sight). He was rushed to hospital."

McClaren admits he is perplexed by De Jong's run in with freak injuries, after a collapsed lung last year ruled him out for some time.

"The exact words I said to him when I saw him was: 'You've had no luck, have you?'

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"I would say frustration is probably not the word. I think certainly from what I’ve heard and seen looking at him it will just be a week or two."

De Jong's Newcastle United career has constantly been interrupted by long spells on the sidelines, being restricted to just 18 appearances in two years on Tyneside.