Acho signed with Tampa Bay on Tuesday, Jenna Laine of ESPN.com reports.
Acho was released Saturday, Chris Brown of the Bills' official site reports.
Acho was signed by the Bills on Sunday.
The Bears are releasing Acho, Ian Rapoport of NFL Network reports.
Acho (pectoral) was placed on injured reserve Monday, Brad Biggs of the Chicago Tribune reports.
Acho exited Sunday's game against the Buccaneers with a pec injury and will not return, Kevin Fishbain of The Athletic reports.
Acho re-signed with the Bears on a two-year contract Wednesday, the Bears' official site reports.
Acho registered 45 tackles to go with three sacks and a forced fumble in 16 games to conclude his seventh NFL campaign.
Acho (ankle) participated fully in practice Friday.
Acho (ankle) was a limited participant in Wednesday's practice, Adam Hoge of WGN Radio reports.