Sign a defensive tackle
Pierce is a big loss for the defensive line. The Vikings tried to shore up that area by trading for P.J. Hall. Hall, however, failed his physical, so the deal was called off.
Minnesota is back to square one with its options on the interior of the defensive line. Shamar Stephen can possibly move over from the three-technique to the nose, but it would make sense to sign a player who could fill the void at nose tackle as well.
Damon “Snacks” Harrison presents an interesting option. He may be past his prime, but he could still add a solidified presence up the middle, and a resurgent year would make him arguably the best interior defensive line option for the Vikings.
There’s also Marcell Dareus, a defensive tackle who’s fallen off a bit in his pass rushing ability but might be a good option for Minnesota. He would likely garner a larger contract than Harrison, though.