Barcelona coach, Ernesto Valverde has welcomed the video assistant referee (VAR), but is sceptical about the long-term effect it will have on football.
The technology has been faced with mixed criticism and has been introduced in major tournaments, like the last World Cup.
It will also be in use in the La Liga this season, and Valverde is looking at how it will affect football as a whole.
“The feeling is that video assistant referees and technology are here to help us, especially for justice in the penalty area,” he told the Barca website.
“But we don’t know what knock-on effects it might have.
“I wouldn’t want VAR to interrupt the flow of games. The great thing about football is that it’s so fast, there are so few interruptions. The referees certainly need help but this shouldn’t be to the detriment of the speed of the game.
“I know everyone is hanging on what happens in the area, but in the World Cup final, France scored from a free-kick that wasn’t and that decided the game. So what’s more important? I don’t know, because I am also waiting to see how it all works out.”