ORCHARD PARK, N.Y. (AP) Veteran linebacker Manny Lawson and fullback Jerome Felton are among 21 players who have been released by the Buffalo Bills.

The Bills announced the moves on Friday, a day before NFL teams are required to establish their 53-player rosters.

Lawson's release comes as a surprise because the 10-year NFL veteran was projected to start in place of injured rookie first-round pick Shaq Lawson. Manny Lawson, however, opened training camp sidelined by a partially torn pectoral muscle and wasn't cleared for practice until three weeks ago. He is also being investigated by the NFL for potentially violating the league's personal conduct policy. Lawson said he's done nothing wrong, and the NFL has not revealed what it is investigating.

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Other notable players released were linebacker Kroy Biermann, and receiver Dez Lewis.

Fullback Glenn Gronkowski, the younger brother of New England tight end Rob Gronkowski, remains on Buffalo's roster.

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