He knows how to hit open shots.
He knows how to play defense.
I could see him squeezing TA out.
If he could still do this, then why would SA play Bogans over him? TA is at least equal to if not better than Bogans. I don't think you can count on Finley for defense, the guy is 37.
Bogans is a BETTER defender (probably closer to the TA range), and can still hit the open shots.
But Finley is still a decent defender (or at least he was last year), and a good shooter.
I am really not sure if he has much left in the tank, but he did last year, and even if he is only on the team to give them another shooter for last second situations, then he is move valuable than an empty roster spot.