Hargreaves has been out of action since September 2008 with a series of knee problems.
The England midfielder had operations on both knees under the guidance of renowned specialist Dr Richard Steadman but after returning to United's Carrington training complex in September had been expected to return to action within a couple of months.
Time to return: Sir Alex Ferguson has revealed Owen Hargreaves will make his long-awaited comeback from injury to play for the club's reserves next week
Instead, a comeback has been repeatedly delayed, with suggestions in the last couple of weeks that Hargreaves was out for the season and had informed Englandcoach Fabio Capello he would not be available for this summer's World Cup.
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