#1 Sergi Roberto (Barcelona)
Sergi Roberto has been the one-man solution for all of Valverde's injury problems this season. Capable of playing as a right-back, winger, attacking midfielder and even as a central midfielder, the 25-year-old La Masia graduate has performed a quality job whenever and wherever he has been called upon.
While Roberto might not be the most important player in the team, there is no denying the fact that his versatility has allowed Valverde to rotate his players and give new signing Nelson Semedo time to settle in at the Camp Nou.
Blessed with a powerful physique and good passing ability, Roberto has often been the unsung hero in many important matches popping up with vital interceptions or scoring crucial goals.
With Roberto's contract running out soon, Barcelona will be determined to tie down the talented youngster. The player himself seemed confident of extending his Barcelona journey. Speaking at a press conference in December, Roberto said:
"The negotiations are going well. I've been a Barca person since I was a kid so I think we should be able to reach an agreement without any problems,"
Having a versatile player like Roberto is a valuable asset for any team in the world and Valverde will be hoping that the contract extension is signed as soon as possible.
Note: The players have not been ranked in any particular order