Armenian midfielder completed his £26m switch to Old Trafford on Wednesday afternoon.
The 27-year-old Armenian is the third player to sign for the Red Devils since Mourinho's arrival.
The France midfielder has been heavily linked with a transfer to his former club.
Chris Coleman's team fall short of a place in Sunday's Euro 2016 final.
Armenian playmaker signs four-year deal with option of further 12 months.
IBTimes UK have spoken with two of the most famous experts in sport law following the sentence.
The 53-year-old manager has replaced Louis van Gaal at Old Trafford.
Antonio Conte is reportedly keen to make the centre-half his first major defensive addition.
The 25-year-old France international is among the most sought-after strikers in Europe.
Manchester United midfielder was considered doubtful due to knee ligament strain sustained against Italy.
Co-owner David Gold says club will 'fight tooth and nail to retain the France international.
Sport Bild suggest City will pay €50m for the 20-year-old.
Catalan outfit considers the player to be 'free of criminal responsibility'.
Welshman was reportedly willing to stay at Old Trafford and work under new boss.
Wayne Rooney, Marcus Rashford and Chris Smalling will travel to China but not play.
Bundesliga giants want the Turkish international to replace Manchester United's expected new signing.
20-year-old is available on free transfer after departing Eredivisie side NEC Nijmegen this summer.
The club's sporting director, Monchi, says Premier League stars are on their shopping list.
The player and his father are expected to serve no time in jail.
The Italy international impressed for the Azzurri at Euro 2016.
Wales players and fans can barely believe the country's run to their first major international semi-final.
AZ reportedly holding out for £17m for the Netherlands international.
Portugal face Wales in the Euro 2016 semi-final clash on Wednesday. Find out how to follow the match live.
United's first preseason game comes at the DW Stadium on 16 July.
Graziano Pelle has only a year left in his contract.
The Spaniard has been linked with a move away from Real Madrid.
The German midfielder joined Manchester City from Borussia Dortmund.
The Dutchman scored 11 goals and registered five assists for Newcastle last season.
The Belgium international has one year left on his contract at Zenit.
Chinese investors will inject €400m into seven-time European champions over two years, former Italy PM says.