Barcelona midfielder Arturo Vidal admits he's unhappy playing without fans.

Vidal featured in the 0-0 draw with Sevilla on Friday.

"It's strange and complicated, from the things we have to do before games to the fixed protocols, as they are things you couldn't imagine before," he told Radio Cooperativa.

"People gave you feelings we don't have now before we even got to the stadium.

"Now the atmosphere has changed completely.

"You don't have the motivation of your fans and it's very difficult to concentrate or, even, to want to go on the pitch.

"Football is about the atmosphere its fans create."