NEWYou can now listen to Fox News articles! Mike McCarthy wants the chance to work with Joey Porter Jr. When McCarthy gets that chance is anyone’s guess, the Pittsburgh Steelers coach included.McCarthy said Monday that the club and the fourth-year cornerback are at an impasse as the two sides try to work out a new deal. The Steelers placed Porter on the physically unable to perform list when training camp opened with what the team described as a back issue that flared up during a mobility test.It seems Porter’s back problems are just part of the reason he has yet…