#3 Kevin Strootman
Kevin Strootman has long been a Manchester United target. The Dutchman has been an exceptional player for AS Roma until injury struck and kept him on the sideline for months together. A combination of speed, physicality, and persistence places him in an elite bracket that has players who can break and start attacks.
If not for his injuries, Strootman would have already been a Manchester United player. Sir Alex Ferguson was a huge fan of the player and could have signed him back then but with the injuries the Dutchman has endured in recent years, he's been on the sidelines for longer than he's been on the pitch.
He's back to the first team this season famously citing he 'feels like a footballer again' and will look to help AS Roma as they chase down Juventus in the Serie A title chase. At Manchester United, Strootman is the perfect kind of player who can sit behind Mata, Herrera and Rooney breaking down play and setting up counter attacks.