Cesc Fabregas says Sergio Busquets is a key member of Barcelona.

Cesc regards his midfield partner among the best in the world.

"He's vital for the equilibrium of the team. Sometimes it's hard to appreciate what he does, but he does a tremendous amount for the team. In the past few years he's been getting the credit he deserves, especially here. I believe he's indispensable for the present and the future of this Club," said Cesc.