The 34-year-old's contract at Bernabeu is due to expire at the end of June, and he is believed to be preparing to end his long association with the Spanish giants this summer in search of a fresh challenge.
Nacho has been with Real Madrid since the age of 11, progressing through the various youth sides to the senior team, making his first-team debut for the club in 2011.
The 24-time Spain international has made 355 appearances for Los Blancos in all competitions, scoring 16 goals and registering nine assists in the process.
Nacho has won three La Liga titles, two Copa del Rey crowns and five Champions League trophies during a highly-successful period, and he will be bidding to help Carlo Ancelotti's side secure two more titles this term in the shape of La Liga and the Champions League.
Man United 'exploring summer deal for Nacho'The defender has largely been regarded as a squad player during his time in the Real Madrid first team, but he has made over 40 appearances in the last two campaigns and has already featured 36 times this term.
Eder Militao has only just returned from an ACL injury, while David Alaba has been missing since December with a serious knee injury, which has made Nacho an important figure this term.
The Spaniard played the full 120 minutes against Manchester City in the second leg of his team's Champions League quarter-final last week and also netted in the penalty shootout.
The defender's time at Bernabeu is seemingly coming to an end, though, and according to Fichajes, Man United are keen to secure his signature.
The report claims that Juventus and Inter Milan are also keeping an eye on his situation, with
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