#1 Sergej Milinkovic-Savic - Lazio
Arguably the most complete midfielder in the world, Milinkovic-Savic's tall stature makes him a strong, competitive, and intelligent playmaker. He is usually known as a central midfielder, but can also play as an attacking midfielder, or in a more central defensive position, totally depending on the situation.
The Serbian midfielder is already rated with a price tag of €100milllion, and has been chased by some of the most prestigious clubs like Manchester United, Real Madrid, and Chelsea.
His style of play is what Barcelona needs, as he is a sensible playmaker, just like Rakitic, who can switch his role depending totally on the situation.
Right from his inter-plays to his through balls, Barca's forwards can benefit. In addition, him playing the role of an attacking midfielder could relieve Lionel Messi from his duties, and allow the Argentine play an aggressive role.