Morton was part of a five-for-one trade that sent him, Ken Henderson, Dave May, Roger Moret, Adrian Devine and $200,000 from the Braves to the Rangers for Jeff Burroughs on December 9, 1976. He was released by the Rangers on April 1, 1977. He signed with the Philadelphia Phillies later in the 1977 season, but he did not play a game before being released on September 14. He signed with the Pittsburgh Pirates before the 1978 season, but he was released on March 18.