FREE AGENTS WHO COULD FIT THE VIKINGS

Jason Campbell, QB, Cincinnati: The Vikings must replace Matt Cassel, and like fellow free agent Brian Hoyer, who probably will get a chance to start elsewhere, Campbell has ties to Norv Turner.

Adrian Clayborn, DE, Tampa Bay: With defensive end Brian Robison possibly nearing the end of his run with the Vikings, this run-stuffing former first-round pick could help him out.

Mike Iupati, G, San Francisco: This three-time Pro Bowler could be the most sought-after lineman on the market. He would help the Vikings get back to being physical on the line, but he won't come cheap.

Henry Melton, DT, Dallas: The Vikings had interest in Melton a year ago, but he joined the Cowboys. If Tom Johnson signs elsewhere, Melton could potentially replace him as a sub-package pass rusher.

Tramon Williams, CB, Green Bay: Zimmer had success in Cincinnati with a 30-plus cornerback in Terence Newman. Maybe Zimmer could coax a couple more productive years out of Williams, too.

MATT VENSEL