Donovan McNabb has been tied to the Vikings in national reports throughout the offseason. And now that teams can talk trade again, the quarterback's name has surfaced in what appears to be far more than speculation.

Jason LaCanfora of the NFL Network reported on Twitter that the Vikings and Washington Redskins have parameters of a deal in place for McNabb but agreeing on financial terms with him could be tricky.

This followed an ESPN report that cited NFL sources as saying the Vikings are one of the few teams that have had trade discussions with the Redskins about McNabb. A key issue, however, would be for the Vikings to work out a restructured contract with McNabb. ESPN reports the Vikings cannot make a deal with Washington if they don't have a deal with McNabb and clearly LaCanfora is being told agreeing on the terms might be an issue.

What remains unclear is why the Vikings would trade for McNabb, who was benched twice last season by Mike Shanahan as the Redskins finished 6-10. It's clear that Shanahan isn't going to bring back McNabb and thus at some point the veteran is going to hit the open market.

The only issue would be if the Vikings are concerned the 34-year-old McNabb would sign with another team, such as Tennessee, and feel it's worth giving up a draft pick to not let that happen. The Redskins signed McNabb to a five-year contract extension that appeared to be worth $78 million last November. However, as ESPN's report points out, the only thing guaranteed was that McNabb would get an additional $3.5 million in 2010.

The contract also has a clause that enables Washington to release McNabb before the 2011 season with no more money due to him.

Many believe the Vikings will sign or trade for a veteran quarterback to help ease the transition of first-round pick Christian Ponder, especially since the rookie did not get the benefit of the offseason program. However, there are different opinions on who would be a good fit to play in front of Ponder for a short period before the rookie was ready.

Another name that emerged early in the offseason was Dolphins free-agent quarterback Tyler Thigpen. There are about six teams interested in Thigpen and the Vikings are believed to be one of them.

Jackson, Seahawks agree to terms

This will come as no surprise.

There are two reports that former Vikings quarterback Tarvaris Jackson has agreed to terms with Seattle. He can't sign the contract until Friday.

The move reunites Jackson with Seahawks offensive coordinator Darrell Bevell, who held the same job with the Vikings during Jackson's entire stint in Minnesota.

Reports also say veteran quarterback Matt Hasselbeck will not return to the Seahawks.