San Francisco 49ers outside linebacker Aldon Smith has shown signs of becoming one of the most feared pass rushers in all of the NFL. He has also had numerous run-ins with law enforcement, leading to suspensions (including the first 9 games of 2014) and legal trouble.
This history, combined with the fact that Aldon Smith is entering the last year of his (renegotiated) rookie contract, makes 2015 very likely the most important season he will ever have in his NFL career. If he succeeds and stays out of trouble, he will be rewarded with one of the richest contracts for linebackers in the NFL.