Cowboys’ Gregory seeks break from suspension-filled history

Randy Gregory wanted to make sure he didn’t spend too much time away from the Dallas Cowboys’ facility this offseason.

It’s been six years since that was even an option for the oft-suspended defensive end.

The 28-year-old Gregory is part of the club in the spring for the first time since he was drafted in 2015. The NFL’s substance-abuse bans have kept him away, and dropped football way down his list of priorities during the times he was on his own.

The former Nebraska standout believes he can…