#4 Willian
Willian displayed a string of impressive performances for Brazil in the FIFA World Cup. The Chelsea winger played an integral role for Tite's men before they were outsmarted by Belgium in the quarter-finals. He looked dangerous and gave the defenders a run for their money.
He was also fantastic for Chelsea last season. Things didn't go as intended for Antonio Conte's team, but Willian was a standout player.
However, Willian could make a move to FC Barcelona this summer. They had a bid rejected by Chelsea, but are determined to lure the services of the Brazilian winger this summer.
Barcelona are ready to make a £60m bid for Willian. If he makes a move to FC Barcelona this summer, it would certainly bolster their squad. He also has an offer from Manchester United, but the Catalan club seems like the realistic destination for Willian.