2. Oriol Busquets
Another midfielder. Busquets is not as experienced as Alena, but he can still compete for the place in the team. That isn't expected to happen this season, but why not next year? He's only 19 years old.
Aside from the last name, Oriol has many qualities common with one of Barca's leaders, Sergio. He plays in the same position as him and has a bright future, undoubtedly.
Oriol made 22 appearances in Segunda Division and one (his first ever in Copa Del Rey with Messi and co.) in the previous season. After that, in February, he received an injury that kept him from playing in the second half of the season. Barca fans can hope that he will be back to pitch and his best form as soon as possible.
Here's a video displaying his passing and defensive skills, proving that the Cules don't have to worry about finding the replacement for Sergio.