Tottenham manager Mauricio Pochettino said he was “unhappy to win like this” after the system awarded Harry Kane the penalty that won the Carabao Cup semi-final first leg against Chelsea.
The only goal of the Wembley game came from the spot after referee Michael Oliver consulted the video assistant referee to check if Kane was onside before he was fouled by goalkeeper Kepa Arrizabalaga.
The VAR camera suggested Kane was onside, but Chelsea showed a screenshot of their own system after the game that suggested he was offside.
The Premier League is set to introduce the system from next season.
“We have six months to improve the system,” Pochettino said. “There is a lot of work to do.”
Pochettino was even stronger in his criticism of the technology, despite the part it played in his side’s victory.
“I don’t like the VAR,” he said. “Today we get the benefit of it but after watching the World Cup and another league like La Liga, I see that nobody is happy from day one that they started to use it.
“To get the benefit is nice but I am unhappy to win the game like this.