The Ivory Coast international joined the Reds from Atalanta in January 2021 and is viewed as one of the most talented young wingers on the European scene.
So far, Amad has made nine first-team appearances for United and he memorably scored a superb goal against Italian giants AC Milan in the Europa League.
“I am delighted to join Rangers until the end of the season,” says Amad. “It is fantastic for me at this stage of my career to have the opportunity to come to such a big club that is challenging on a number of fronts and will give me some excellent opportunities to test myself in many environments.