Manchester City's new signing Martin Demichelis is facing six weeks out through injury.
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City secured Demichelis' services from Atletico Madrid last Sunday as Manuel Pellegrini sought to bolster his defensive options.
But the former Malaga boss has been dealt a blow with the news that Demichelis is set for a spell on the sidelines.
It is reported by the Manchester Evening News that the centre-back suffered a knee ligament injury while training with the club.
Pellegrini is already without captain Vincent Kompany due to a groin problem, although Micah Richards is said to be closing in on a return.