Barcelona midfielder Javier Mascherano admits defeat to Celta Vigo is concerning.

Barca were thrashed by Celta Vigo in midweek.

“They overwhelmed us in the score-line and in the play, which is most worrying thing," the Argentina international admitted. “They won all of the individual duels."

He continued: “It always hurts to lose, but the best thing is to think of Saturday [against Las Palmas] and to look carefully at last season [when Barça won the treble].

“It's partly credit [to Celta] and partly our failure — there are no excuses."