My best guess having done my own ACL is that our boy has a partial tear which will take 3 to 4 months to heal. If he wasn't a professional sportsman it could be left to heal with external treatments but given that a footballer causes different stresses to the ligaments it will be best to have reconstructive graft surgery otherwise it my happen again. Either way we will have to do without Rodders until Feb/Mar at the earliest. I may be wrong but if it was a full blow out they would know pretty much straight away that his season is done.
I'm not sure if he's had serious injuries before and how long his recovery normally takes. Does anyone know? Some players are faster healers and a lot depends on pushing yourself - luckily City have the best support team around and Dr Cugat is a wizard with knees.