He was also a member of the New Orleans Saints, Oakland Raiders, Denver Broncos, Indianapolis Colts and Pittsburgh Steelers.

[1] Green committed to the University of Florida over Ohio State, Georgia, Tennessee and USC as a 4-star recruit.

Green was selected by the Dallas Cowboys in the third round (91st overall) of the 2015 NFL draft,[5] after dropping because of durability issues.

[6][7] After injuring his hip during organized team activities, he had surgery on June 16, which caused him to miss all of training camp and start the season on the physically unable to perform list.

He started at left tackle against the Chicago Bears and the San Francisco 49ers in place of an injured Tyron Smith.

[9] He underwent surgery and was placed on the injured reserve list on December 16, finishing with a total of 12 missed games.

On July 31 a week into training camp, he suffered a strained rotator cuff in practice, forcing him to miss 15 days.

In Week 8 against the Kansas City Chiefs, he played the final six snaps at left tackle in place of an injured Tyron Smith.

Even though the Cowboys coaches were criticized for not adjusting the game plan to stop Clayborn, Green never recovered from the debacle and did not play another snap for the rest of the season.

As in previous seasons, he also had to fight through bouts of dehydration during training camp, that forced him to leave practices early on different occasions with cramping.