Patriots defensive end Trey Flowers recently underwent shoulder surgery, according to ESPN’s Mike Reiss.

The surgery was not considered serious and described as more of a cleanup.

The 6-foot-2-inch, 265-pound Flowers is considered to be one of the top free agents on the market after producing 57 tackles, 3 forced fumbles, and a career-high 7.5 sacks in 15 games in 2018. The Globe’s Ben Volin wrote Saturday that Flowers could be targeted by teams with ties to the Bill Belichick coaching tree, including the Detroit Lions (coached by former defensive coordinator Matt Patricia), the Miami Dolphins (coached by former linebackers coach and de facto defensive coordinator Brian Flores), and the Tennessee Titans (coached by former Patriots linebacker Mike Vrabel).


In four seasons, Flowers has 164 total tackles, 21 sacks, and 5 forced fumbles in 46 regular-season games.

Brandon Chase can be reached at brandon.chase@globe.com.