Cowboys defensive end Charles Tapper is set to undergo surgery on his right foot, according to Ian Rapoport of NFL.com (on Twitter). Tapper will be placed on injured reserve as he heals from what sounds like a season-ending procedure. 
Tapper is believed to have fractured of the fifth metatarsal in his right foot. It’s an unfortunate break for the youngster, particularly since he missed his entire would-be rookie season with a back issue. His 2017 campaign has been put on hold, and likely ended, after two games in which he recorded three tackles and one sack.
Fortunately for the Cowboys, David Irving is returning from suspension just as Tapper exits. The defensive end served a four-game ban for violating the league’s PED policy over the summer. Last year, he graded out as the league’s No. 29 interior defender, per the metrics at Pro Football Focus.
Tapper, a 2016 fourth-round pick, appeared in 39 games with Oklahoma in three seasons and piled up 13.5 sacks and 24 tackles for loss.