One draft source I found had their second pick (#14 overall) from the Broncos. Didn't dig into it to see how that came about though. UPDATE: Found it. Seattle traded their 2nd round pick (5th pick in the round) last year for Denver's 1st round pick this year. Denver used it to pick Alphonso Smith from Wake Forest.
And Seattle should definitely look to use one of those two picks on a quarterback, especially if either Bradford or Clausen start to slip a little bit