The Seahawks could be losing a pair of coaches this offseason.  The Vikings announced on Tuesday that they completed an interview with Seattle defensive assistant and associate head coach Sean Desai.  Minnesota is searching for a new defensive coordinator after firing Ed Donatell.  Desai is also being pursued by the Dolphins, who requested to speak with him.  The Seahawks could also be losing quarterbacks coach Dave Canales after he was requested for an interview by the Ravens earlier this week.