All seven were cut by Buffalo on Saturday before rejoining the Bills on Sunday. Linebacker Jimmy Gaines, wide receiver Caleb Holley, defensive linemen Ike Igbinosun and Bryan Johnson, and defensive backs Deon Broomfield and Kenny Ladler join Tuel on the practice squad.
Tuel was signed as an undrafted free agent out of Washington State in 2013 and went on to play in two games for the Bills last season, making one start.
He completed 26 of 59 passes for 309 yards, one touchdown and three interceptions.
The Bills signed veteran quarterback Kyle Orton on Saturday to fill the slot behind Manuel.
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