The Minnesota Vikings aren't interested in trading Christian Ponder, despite a disappointing start to his NFL career.

Ponder is one of just two quarterbacks on the roster, as he's expected to be Matt Cassel's backup.

"That would leave us with one quarterback. I would not do that," Rick Spielman said. "We're going to need two quarterbacks. Three."

The Vikings decided not to pick up the fifth-year option on Ponder, whom they took with the 12th pick in the 2011 draft.