It's going to be Delonte. Banks is one of the best defensive point guards in the league - however, when he's on the floor, team offense=his offense. And given his poor shooting and his inability to go left, he's not a very good offensive player. However, he did seem to "get it" in stretches over the second half of last season, so I hope he sticks around for at least another year. The depth chart looks something like this: West/Banks/Greene(?) Allen/Davis/Pierce/Green(?) Pierce/Reed/Gomes Jefferson/Reed/Gomes/Blount LaFrentz/Perkins/Blount/Borchardt(?) I doubt Gerald Green will see the floor much. I also doubt that Qyntel Woods will make the team.
I would also say Delonte too only for the fact that there were some trade rumors floating around this summer concerning Banks.
