The 34-year-old Greisen is headed back to the NFL with the Dallas Cowboys, according to ESPN sources.
Greisen will sign with the Cowboys' practice squad on Monday, and thus avoid the $25,000 United Football League transfer fee.
After playing backup to Brooks Bollinger, Greisen helped the Florida Tuskers reach the UFL championship game by winning all three of his starts. He completed 56-of-79 passes for 643 yards with five touchdowns and two interceptions in the regular
After an up-and-down career, Greisen has managed to get back on track.
Greisen led Northwest Missouri State to its first Division II national championship in 1998. The Arizona Cardinals selected him in the seventh round of the 1999 draft, and he spent three seasons with the team as its third-string quarterback, appearing in five games and throwing 16 passes.
From there, he spent time on the Washington Redskins practice squad in 2002 before playing in Germany in NFL Europe in 2003. He returned home to play for arena teams in Green Bay, Dallas and Georgia before signing with the Tuskers last season.
The Cowboys' current QB starter, Jon Kitna, injured his left oblique muscle in the second quarter of Saturday's loss at Arizona. If Kitna doesn't play, Stephen McGee would make the first start of his career and the Cowboys would move Greisen up from the practice squad to the active roster.