#2 Hector Bellerin (Arsenal)
Barcelona have never really replaced Dani Alves since his departure prior to last season. The club have played the likes of Sergi Roberto, Aleix Vidal and, most recently, Nelson Semedo (who was acquired this summer) in the right-back role.
While Jordi Alba continues to help create opportunities on the left flank, the same cannot be said about the right. Peak Alves was the best in his position in the world and Barcelona's right flank was one of the toughest to defend with Lionel Messi also drifting in from the right.
But with Messi back in the false nine role, most of Barcelona's attacks are focused down the middle followed by the left. Only 10% of attacks on goal have come from the right side this season even though the majority of the play is on the right.
While Semedo is an adept passer and dribbler of the ball, Hector Bellerin is a better bet on the right flank. The Arsenal full-back has struggled as a wing-back but he is the perfect right-back when Arsenal play a back-four.
His runs down the flank help stretch the defence and he is no stranger to cutting in when midfielders go wide to provide balance in attack. Additionally, Semedo does not cross the ball as much as Bellerin (be it aerially or along the ground).
The Catalan-born Spain international has been linked in the past two windows and it may be just a matter of time before the 22-year-old returns to the club where he spent eight years before moving to England.