I'd be amazed if we see him much at all this season to be honest, full recovery for an ACL reconstruction is normally around 9 months which would pretty much take his time off to March, would be a massive shame if that's the case.
I figured he may make the playoffs, which would be nice, but then it depends on match fitness. Personally, I think he takes as long as is required so we get back the Mosey we all know and love for next season.