This is what Seymour told SiriusXM NFL Radio:

One thing that I can take from Carson is just him being a field general out on the field and his leadership ability to get some interesting guys together and try to get them all on the same page. [...] Obviously, it’ll be a learning curve for him because he hasn’t played football in awhile but I’m excited to have a leader on that side of the ball of his caliber. Anytime you have an opportunity to acquire someone of Carson’s pedigree I don’t think it’s something that you can pass up on.

I think this quote says a lot about Seymour's opinion of Jason Campbell's skills as a leader of the Raiders offense. Carson Palmer has Seymour's respect, and that to me is more important than the (unfortunate) logistics of that trade. Our players sound excited about him, and so should be we - GO RAIDERS!