The 24 year old Spanish midfielder and Catalan player believes that his club team mate Lionel Messi is light years ahead of Cristiano Ronaldo.
In the recent past the Catalan side had stuttering run, they drew three matches back to back and they had gone off track from the title race,
But now the Catalan team is back in their form in their recent back to back wins.
This season the Barcelona superstar Lionel Messi losing out Ballon d'Or against Cristiano Ronaldo, and got the 2nd spot in the Ballon d'Or.
But in their last match against Espanyol the Argentine captain and five times Ballon d'Or winner scored a goal for his club and assisted twice in that match and Barcelona team won that match by 4-1.
The Barcelona youngster said that: "He is the best player in history. You can't compare him [with Cristiano Ronaldo].
"Beyond the Ballon d'Or, everyone knows that Messi is the best. He's light years ahead."
The Barcelona Midfielder Andres Iniesta played some key role in their last match and Sergi Roberto added:
"Watching Andres and Leo when they're together is fantastic. It's a tandem the fans love to see because they create magic with the ball at their feet. Everyone knows the greatness of these two players.
"Andres is from the academy and he's spent many years with the club. You notice when he's not there. He's one of the team's most important players."
In the El Clasico at the Camp Nou Real Madrid captain Sergio Ramos scored a late equalizer and steal two important points from Barcelona,
The 24year old Barcelona youngster thinks that the Madrid side was lucky to won that match and also they are fortunate to seat at the Zenith of the La Liga table and now the Barcelona is sitting at the second position just three points away from the Real Madrid side.
He voiced: "I think that they have had a bit of luck so far,"
"They have been scoring goals in the last minute. A game doesn't end until the final whistle, of course, and you can score then, but there have been a lot of games when they've been drawing and end up scoring in the last minute through a free kick or a corner.
"But for us it's positive mentally to end the year three points behind Madrid in the league. It's good to go into the break with a win. We're back in good form."