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The Bills signed veteran linebackers Brandon Spikes and David Hawthorne as free agents on Sunday to bolster a group beset by injuries this summer and they waived one of the injured players as they made room for the new arrivals.

Kevin Reddick is out of action with a knee injury and the numbers crunch led the Bills to put him on waivers with the injured designation. Reddick would revert to injured reserve if he goes unclaimed and can eventually reach an injury settlement to become a free agent once he’s ready to play.

Reddick played five games for the Bills last season and made four tackles. He’s also spent time with the Panthers, Chargers and Saints.

The Bills also released cornerback/returner Javier Arenas, who was a Chiefs second-round pick in 2010 but hasn’t played in a regular season game since 2014 with the Falcons. Wide receiver Gary Chambers was also dropped from the roster and the Bills signed tight end Jimmay Mundine, who spent time with the Patriots last offseason after going undrafted out of Kansas.