I really liked the idea of Kendall Marshall coming out into the draft, but his weaknesses coming into the NBA (athleticism, scoring, defense) became sticking points for him not getting minutes, albeit on losing teams with limited talent ahead of him. With the ACL injury, he might be done in the NBA...couldn't get minutes in Philly last year, and not too great when he did.
If Collison misses time, I'd take a 10-day contract on him to see if he's regained some lost strength/coordination over the summer, but not much more. Sad, as he's a fantastic passer, and will probably make a nice coach someday.