I am extremely worried on Metchie

I am worried about what is rehab is like for a football player who had cancer like acute promyrlocyic Leukemia. Is this cancer enough for death to on our own rookie into 3 years from now? John Metchie already had a enlarged heart back he was ninth grade. Bro if I was John Metchie I would let myself with a doctor 24/7 rest of my life. Any cancer can come back. He already had ACL surgery predraft so I will have very little expansion for his NFL career and prematurely ended via DEATH or very early retirement without a debut EVER.