Jeonbuk Motors manager Jose Morais has called on the Asian Football Confederation to invest in VAR following the 2-2 draw with Sydney FC in the AFC Champions League on Wednesday.
With the game tied at 1-1, Jeonbuk went down to ten-men after Choi Bo-kyung handled the ball inside the box.
Adam Le Fondre scored the subsequent penalty, before Brazilian substitute Murilo snatched a last-minute equaliser.
Speaking after the game, Morais questioned why the AFC had not caught up with other leagues by using the available technology.
"I had problems last season to understand some criticisms. And I don't even understand why we don't have VAR," he said.
Pushed if VAR would have overturned the red-card and penalty, Morais responded: "Maybe not. But it could be good to have in Asia.
"I don't understand why we don't invest in the same way that other leagues are investing in terms of technology that can help make the game more fair.
"I'm not suggesting anything, I'm just saying it could be possible.
"Probably it was a penalty, I can't say because I wasn't there. The referee took a decision and I believe that he was right."
Jeonbuk were rewarded for pressing on for an equaliser despite being down a man.
The Korean giants were also hindered by the fact they hadn't played a competitive game since December, due to the Coronavirus forcing K-League games to be cancelled.
But former Chelsea assistant Morais insists he never doubted the determination within his squad.
"I think that team is going in the right direction and using its potential. It is a different team that we had last year but we are coming back.
"I'm not surprised about the way we came back because the spirit is the spirit we have every day. And this is the spirit that makes us champion in Korea, because it is not possible to be champions in Korea if you don't have this spirit."