The New England Patriots released veteran defensive tackle Mike Purcell on Wednesday after signing him on Aug. 1 for depth on the line.Purcell, 33, started 10 of his 16 games played with the Denver Broncos last season and recorded 25 tackles, five quarterback hits and one fumble recovery. In eight seasons for the San Francisco 49ers (2014-16) and Broncos, he has 208 tackles, including 3.5 sacks and 15 tackles for loss, as well as three fumble recoveries in 90 games (45 starts).