Pereira’s side were beaten 3-2 by Man United at Old Trafford on Sunday (May 17), but it could have been a different story.
The ball appeared to strike Mbeumo’s arm in the build-up to Matheus Cunha’s goal, which made it 2-1 to the hosts.
VAR official Peter Bankes conducted a lengthy review for a possible handball by the forward, but referee Michael Salisbury eventually opted to let the goal stand.
Speaking to reporters after the game, Periera was clearly frustrated with the decision, and demanding a meeting with PGMOL, the referee’s governing body.
"Crazy game, maybe a good game for the supporters, but for a manager it was an open game, especially in the second half," he said.
"In the end it was a pity a game was decided on a decision I must accept but it is not my opinion, for me it is handball, very clear but he decides not to cancel the goal."
Perieira believes that inconsistency within Premier League officiating needs to be addressed at the highest level.
"This is the doubt we have in the Premier League at the moment about the decisions," Pereira added.
"I think it is important to have a meeting with everybody and try to understand the rules, the decisions, I think everybody all the managers they have doubts about some decisions."