Signing an unproven backup to be your franchise quarterback can be a dicey proposition.  Scott Mitchell anyone?  Seattle needed a quarterback and now the Green Bay Packers need a backup.

 

The Seattle Seahawks are hoping another Green Bay backup turns into their franchise quarterback.

The Seahawks reached agreement Sunday with Matt Flynn on a three-year deal, bringing one of the most wanted -- yet unproven -- free agents to the Pacific Northwest to try and solidify Seattle's QB position.

The contract is worth $26 million with $10 million guaranteed, a league source told ESPN NFL Insider Adam Schefter.

Flynn agreed to a deal with Seattle after visiting both the Seahawks and the Miami Dolphins over the past week.

By choosing Seattle, Flynn also spurned his former offensive coordinator in Green Bay, Joe Philbin, who is now the Dolphins' head coach.

Flynn has been a career backup in Green Bay, stuck behind All-Pro Aaron Rodgers -- much the way Matt Hasselbeck was stuck behind Brett Favre before being acquired by Seattle in 2001.

When given an opportunity, Flynn has shined. His best performance was his last, throwing for 480 yards and six touchdowns in a victory over Detroit in Green Bay's season finale.

That sealed Flynn as one to the top free-agent prospects this offseason. He visited Seattle late this week and after a brief trip to Miami, picked the Seahawks.

Terms of Flynn's deal were not released by the team, although owner Paul Allen took to Twitter to congratulate general manager John Schneider and coach Pete Carroll on locking up Flynn for three years.

"Just got off the phone with Matt Flynn. And he's ready to WIN!!," Seattle receiver Doug Baldwin tweeted Sunday.

via 2012 NFL free agency -- Seattle Seahawks, Matt Flynn agree to deal - ESPN.