Amari Cooper leaves Cowboys practice with heel injury

Amari Cooper says Raiders owner Mark Davis, not Jon Gruden, wanted to trade him to Cowboys

Amari Cooper suffered a setback at Cowboys training camp.

The receiver left practice early on Saturday due to a bruised heel, the Dallas Morning News reported. He was seen standing on the sidelines after he left the field.

According to Cowboys executive vice president Stephen Jones, Cooper’s injury happened at practice Friday.

“It started bothering him a little bit (Friday) and then it bothered him even more so (Saturday), so we pulled the plug on it,” Jones said.

Normally bruised heels take one to three weeks to heal, meaning Cooper should be good to go by the time the regular season starts in September.

Cooper, who is in his second season with the Cowboys, was a huge weapon on offense after he was traded from the Raiders last year. He recorded 725 receiving yards for six touchdowns in nine games for Dallas.