On NFL Countdown, Rex Ryan explains why he wants to be back coaching amid the rumors surrounding the Dallas Cowboys. #ESPN #NFLonESPN #ESPN ✔️Subscribe to ESPN+ http://espnplus.com/youtube ✔️ Get the ESPN App: http://www.espn.com/espn/apps/espn ✔️Subscribe to ESPN on YouTube: http://es.pn/SUBSCRIBEtoYOUTUBE ✔️…