Wolverhampton Wanderers manager Nuno Espirito Santo has said new Premier League rules could "ruin the game" after seeing VAR cancel out a goal for his side in the goalless draw against Leicester City that would likely have stood last season.
Leander Dendoncker's goal second-half strike was chalked off after replays showed a handball by Willy Boly to ensure a 0-0 draw at the King Power Stadium on Sunday.
It was the only serious incident of a forgettable game between two sides expected to challenge for Europe this season.
"I thought it was a goal, we were ready to start again and VAR [on the big screen] said it might've seen something and I was surprised," Dendoncker said.
"Willy Boly was just jumping and I had no clue it was a handball. It's a new rule so we have to adapt to it and get used to it."
However, Premier League rules state that "any goal scored or created with the use of the hand or arm will be disallowed - even if it is accidental - under the Laws of the Game".
Wolves manager Nuno expressed his displeasure, claiming new rules could risk harming the Premier League.
"I haven't seen the images but I trust them. If they saw it, what can we do?" he said. "Things that weren't [that way] before shouldn't be now. We have such a nice Premier League, such a product, we cannot lose that.
"It's what fans come for, to celebrate, not to celebrate a no goal - that's not the real celebration of football. It's not good for the atmosphere of football. The Leicester fans were celebrating the no goal, that's not the mindset of the game.
"What I'm concerned about is, let's not ruin the game. Two minutes the game stopped. The anxiety of us celebrating, then we waited - it's not the spirit of the game."
Leicester struggled to find any rhythm and better will be expected from Brendan Rodgers' men.
Rodgers chose Caglar Soyuncu to fill the gap at the back left by Harry Maguire's £80 million (Dh354m) exit to Manchester United.
The Turkey international made just four league starts last season after his £19m move from Freiburg and played as many times for his country as he did the Foxes. But he had little to worry about in a forgettable first half as the sides nullified each other, and his manager reserved special praise for Soyuncu.
"Caglar was excellent," Rodgers said. "He got a round of applause at the end from his team-mates and it's not easy to come in for a special player like Harry, but Caglar was strong and comfortable on the ball."
On the VAR decision, Rodgers was more welcoming of the introduction of the video assistant referee than his Wolves counterpart.
"I'm a massive fan of VAR," the Leicester manager said. "I've said all along that some will go for you, like it did today, and some will go against you, like it has done for Nuno today.
"It has to always be consistent and if there's a handball and that leads to a goal, it gets ruled out. The officials are trying to work it the best they can. It's not perfect yet but as long as you get to the right decision, that's what we want."