Pryor has found a decent amount of interest since he was waived by the Seahawks earlier in the year. Up to this point, Pryor has reportedly worked out for the Eagles, Giants, Bengals and Buccaneers.
Pryor, 25, appeared in 11 games last year and completed 57.4 percent of his passes for 1,798 yards, seven touchdowns and 11 interceptions.
Lewis, 26, was among the Bills final roster cuts coming out of the preseason after he was unable to beat out Jeff Tuel for a backup job.
Last year, Lewis appeared in six games and completed 59.2 percent of his passes for 1,092 yards to go along with four touchdowns and three interceptions.