If he had a true tear and was medically cleared after 3 months, then the Dr. who cleared him should have lost his right to practice medicine. There's quick hearing, but three months is not possible unless it was not really torn.
I am not too sure about that.
There are supplements on the market that can promote growth and interesting results if you know what you want to do.
Most pro athletes have dieticians and trainers who will develop diets to promote results.
Give just a small example. A few years back I retired and wanted to grow my hair long and just tie it with a ponytail.
So one day I see in the grocery store on the vitamin aisle a supplement saying it's for hair and nail growth.
I buy it and start taking it. In a year my hair grew 12 inches an my nails got thicker an stronger an stopped breaking off when they grew out.
My hair is now 2' long and it's all the same length and I am more than satisfied. So players that change their diets and eat correctly and rehab..
being back early and stronger is certainly possible.
Everybody is different an he process is not cheap but..
Possible.