Celta Vigo forward Nolito does not believe that Barcelona "have the same level" that they possessed under the leadership of Pep Guardiola.
Saturday's 2-1 win in El Clasico against Real Madrid made it 28 points from 10 matches for Barcelona, but Nolito has claimed that their team is not as strong this season.
"This Barcelona team does not have the level they had under Guardiola. But that this standard is very difficult to maintain," he told Efe.
"Barcelona is the best team in the world still. They have a lot of quality players like [Andres] Iniesta, Xavi and [Lionel] Messi who can decide a game at any time."
Barcelona travel to Celta Vigo on Tuesday evening.