think you should watch his recent highlites a couple triple doubles-just watch his moves and court sense-nice shot a real easy slot in-and been in celtics system for awhile-
He's not on the C's 15-man roster so he's available to any team for the taking if I'm not mistaken. As such, if he was that great a prospect or option for a team needing a PG off the bench, I think he'd already be with a team if he were that solid a player. The fact that he's not leads me to believe the teams in the league aren't as excited about him as you are from recent games.
Philly would seem like the prime example of a team in need of a functional PG off the bench, especially since the bulk of their roster is D-League caliber, and yet this guy isn't getting a call from them.
It may be an unfair bias against D-league talent but in all fairness, players rarely get pulled from the D-league and become productive rotation players in the NBA. Not sure I'd be all that excited about signing a D-League player to replace one of our rotation players in the event of injury.
I'm not a fan of Rozier at the moment but I'd hope he'd play more under-control/team-oriented ball than he does in garbage time if pushed into a more prominent role due to team injury and that he'd be more familiar with the team's playbook/style and therefore be a more productive player on the court in those circumstances.