They traded Cooper because he was making too much money and they wanted to get something for him because if they didn’t, they were going to release him. If Lance doesn’t look good in training camp and preseason this summer, they’re not going to hand him the job. Dak could be injured for a period of time, and he may have to play. If the competition is close, and even if Rush looks a little better they’ll probably make Lance the backup. However, if he’s not the least bit impressive this summer he’ll end up the third QB if we keep three.