Manchester City 's new defender Martin Demichelis has suffered a knee injury and is set to be out for six weeks.

The Argentine international signed for City over the weekend after finalizing a move from Atletico Madrid - a club he never actually played for following an earlier summer switch from Malaga .

The 32-year-old was reunited with his former boss Manuel Pellegrini, who will be disappointed to learn that he is unlikely to be able to use him until November.

Demichelis suffered the injury in training and immediately underwent scans, which have at least shown that surgery will not be required.