While letting Matteo Darmian leave and join back Italy (most likely Inter Milan), Manchester United management, according to O Jogo, are planning to replace him with almost 23-year old Portuguese international right-back Nélson Semedo. Currently on a deal with Benfica until June 2021, the release clause set on the player's contract amounts to €60/£54m. Besides, Semedo is tracked by Everton as well.
Source: transfermarketweb.com