Miller was designated for assignment by the Rangers on Friday.
Miller was DFA'd by the Cubs on May 30 before being claimed off waivers by the Rangers and optioned to Triple-A Round Rock on June 4. With Texas claiming Shaun Anderson from the Twins on Friday, Miller once again found himself as the odd man out on a 40-man roster. The right-hander has little major-league experience, appearing in two games (one start) for the Cubs in 2020.