My worst ankle sprain was stepping on another guys foot . Foot was blown up huge , couldn't get a shoe on . It took dang near a year before I felt 100% again. Of course I had no professional help , no PT, I just hobbled around till it was better. Which was stupid of me , but hey 20 something's aren't the brightest bulbs when it comes to injuries.
He come back quicker with being able to,stay off it , I had to go,to work or starve . Plus trainers and all,the modern PT . He'll have quicker recovery than average street person.