Arsene Wenger might be concerned to hear that one of his youngsters currently gaining experience elsewhere has been hit with a new injury blow.

The Arsenal manager’s decision to sign Rob Holding during the summer transfer window meant at least one more centre-back was bound to be offloaded for the time being.

Calum Chambers turned out to be the man sent out on loan and after an impressive string of displays for Middlesbrough, the youngster has been hit with his first notable setback.

The former Southampton defender, who is expected to return to Arsenal after this season, has suffered an injury which could rule him out of action until March.

“Calum has a stress fracture in his foot,” Middlesbrough manager Aitor Karanka said.

“I don’t know how long he will be out for or if it will be one, two, three or four weeks.

“At the minute he’s trying to get fit as soon as possible.”

Various reports have suggested that the 22-year-old, who has become a key part of the Middlesbrough team, could be sidelined for a month.

Chambers’ last appearance for Arsenal came in the dramatic 4-3 defeat to Liverpool on the opening day of the season.

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