Very rarely after an ACL injury is a player back to normal. He might be ok for pace if he can fully extend and stability might be back to 95% plus but never 100% but the main issue will be confidence . Every time he jumps, turns, reacts instinctively there'll be a doubt and that will cost him. Sad because i like him as a player. If he had pushed the issue perhaps and not played the clubs off against each other, ( In my opinion his team drew it out to bump up his conditions) he would have been in Germany right now, having been rested for the Community Shield.
Maybe in the past, but with modern science 100% recovery is much more common and he has youth on his side. Will be interesting to see if the Ox comes back the same his injury was much more severe and he also relies on his pace and dribbling. Aslong as Sane isn't rushed back which i doubt he will be he'll be okay.