McMullen was also a member of the Minnesota Vikings, Washington Redskins, Seattle Seahawks, and Detroit Lions.
As a senior at Virginia in 2002, McMullen became the second all-time leading receiver in ACC conference history with 210 career receptions.
The move reunited him with Brad Childress, who had been his offensive coordinator in Philadelphia before being hired as head coach of the Vikings.
The team released wide receiver Jordan Kent to make room for McMullen on the roster.
He was released on August 8 when the team signed first-round draft pick Aaron Curry.