#4 Juan Mata
The 30-year-old is a typical Spanish midfielder who needs to be summoned when the team is struggling to find that cutting-edge in the attacking midfield.
Mata is a delight to watch when he is in mood and more than that, he is an absolute gem of a human being. He has scored 32 goals in 132 appearances for the Red Devils providing 50 assists.
He joined Manchester United in the January transfer window of 2013/14 season from Chelsea in search of more game-time. This was the only positive brought by David Moyes to the then English Champions.
United paid close to £37 million for securing his services and the player didn't disappoint his employers.
He put the Old Trafford crowd on the edge of their seats in the closing match-days of the season and appeared to be a decent buy.
When Jose Mourinho took in charge of the club in 2016, he was tipped to leave the club as his chances of playing for his ex-boss was pretty slim. However, he became a reliable option for the manager with his fighting spirit.
Mata has been crucial this season too. He has scored three and created six for his team in 38 appearances so far.