Manchester United management are nervous about Robin van Persie joining up with the Holland squad this week.

De Telegraaf says Van Persie is on the brink of entering the 'red zone' after taking part in United's global preseason tour.

The Dutch ace did not last the full 90 in victory over Arsenal on Sunday and there's concerns he could go the same way as Barcelona star Lionel Messi, who has just been ruled out for two months with a hamstring injury.

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