#4 Marquinhos
The defender has constantly been linked with a move away from Parc Des Princes in the past few transfer windows.
The Brazilian has been in sensational form for the French side in the past couple of years. Ligue 1 fans need absolutely no introduction to the fact that he is arguably the best centre-back in France alongside Thiago Silva, his compatriot and teammate.
In 2017/18, the 23-year-old has made 33 appearances so far. His hold up on the ball and dribbling have improved massively.
He is a fantastic tackler and passer of the ball. The defender has a passing accuracy of 92% in the league and took six defensive actions per game, winning 54% duels on an average this season.
He is a player, Barcelona could bank on for at least a decade. The Spanish super-giants, however, would have to battle Manchester United for the player's signature.