The 37-year-old, who spent 14 seasons as a professional player, has been hired by head coach Bruce Arians as a linebacker coach for pre-season.

"One thing I've learned from players is, if you can make me better, I don't care if you're the Green Hornet,  I'll listen," said Arians.

Welter said:  "I'm honoured to be a part of this amazing team."

Welter, who has a master's degree in sports psychology and a PhD, became the first female to play in a non-kicking position in a men's professional league when she played running back and in special teams for Texas Revolution in February 2014.

She also coached linebackers and special teams for the Revolution last season, becoming the first woman to coach in a men's professional league.

Welter also played as a linebacker for 14 seasons with the Dallas Diamonds of the Women's Football Alliance.

"Coaching is nothing more than teaching," Arians said.

"She'll have a great opportunity with this internship through training camp to open some doors for her."