Tight end/fullback Stephen Spach fits into that category, as the Vikings signed him earlier this week.
Spach played in 13 games for the Philadelphia Eagles in 2005, making one start. He caught seven passes for 42 yards while working under former Eagles offensive coordinator and current Vikings head coach Brad Childress.
The Eagles released 6-foot-4, 250-pounder from Fresno State at the end of training camp in 2006 after giving him a try at fullback. He also had a tryout with the Seattle Seahawks after his release in September 2006.
At Fresno State, Spach posted six catches for 75 yards and two touchdowns as a senior and 13 catches for 127 yards as a junior. He was a three-year starter and All-Academic selection and was considered a blocking tight end entering the 2005 draft, according to TFY Draft Preview's 2005 analysis.