MANCHESTER, England (AP) — Manchester City center back Martin Demichelis has been ruled out for six weeks with a right knee injury, just days after joining the English club.

City says on Friday that a scan has revealed ligament damage, although the Argentina international doesn't require surgery.

The 32-year-old Demichelis has yet to play for City since joining from Atletico Madrid on Sunday.

City is already without injured defenders Vincent Kompany and Micah Richards.