Erasmus James' career has been very similar to the beginning of Kyle Vanden Bosch's career, who is a pro bowler now. Vanden Bosch was a second round pick of the cardinals, who tore 2 ACLs and an MCL in his first 3 seasons and got cut after his 4th season(2004). Then in 2005, the Titans picked him up for the vet minimum and he started all 16 games and got 12.5 sacks.
James was a first round pick who tore 3 knee ligaments in his first three seasons and now he got traded to the Redskins to try to resurrect his career. It might take all of this year to get healthy, but it is definitely possible for him to come back and play very well. I'm not saying he is gonna be a pro bowler like Vanden Bosch, but it is possible. It has been done before.
Kyle Vanden Bosch
Erasmus James