Campbell should not play anymore in the preseason, IMO. Definitely not this week, maybe a 1 series appearance in the final preseason game.
As to who should start in his place, I'd give Brunell the entire 1st half this week and Collins the entire 1st half in the final preseason game.
Anyone who isn't confused really doesn't understand the situation.
-- Edward R. Murrow
There are no mistakes, just happy accidents.
-- Bob Ross