Former Premier League referee Dermot Gallagher has weighed in on the controversial decision by Thomas Bramall to rule out Morgan Rogers' goal against Manchester United . Rogers thought he had scored in the 74th minute at Old Trafford , capitalising on an error from United goalkeeper Altay Bayindir . But the referee blew for a foul by Rogers on Bayindir just before the ball reached the empty net. As referee Bramall had already stopped play before the ball crossed the line, VAR was powerless to reverse the decision, even though replays suggested that it may have been the wrong call. United beat Villa 2-0 courtesy of second-half goals from Amad and Christian Eriksen, with the visitors missing out on Champions League qualification as a result. Discussing the incident on Sky Sports' Ref Watch on Monday, Gallagher said: "I think there's a lot of things to debate. When you see the replay you see the challenge by Rogers on the goalkeeper. "He's got the ball there under control, I think he loses it there and the damage is done here for me because once the referee blows his whistle the game is terminated, so Rogers' shot at that point doesn't count. "I just wonder, we talk all the time about players creating time on the ball, if the referee creates one second I think the landscape moves and the VAR can intervene. And I wonder then if the VAR intervenes he can then go to the screen and they change his decision, he may stick with it. "If he changes his decision I think a lot of people would be happy with it and accept it. Even if he sticks with it, I think we will have a situation where it is more palatable. People will not like it, but they will accept it more, but because of what happens it is very, very untidy. "The VAR checks when the whistle was blown, not the goal. That's the key issue. If he had waited the time is still his own, he owns that time and he can make as many decisions as he wants. He can ask his assistants. Then he can ask VAR. He may have said it's a foul which we would have accepted. He just didn't give himself time to think – that's his only mistake." When asked if he believes it should have been a goal, Gallagher added: "I think as it develops I will explain more to you how I think, it's not as easy as that. I think the referee has probably taken the worst option for himself at the moment." Villa confirmed on Sunday night they have written to PGMOL about the decision, questioning the appointment of the inexperienced Bramall to such a high-stakes match. Villa's director of football, Damian Vidagany, confirmed an official complaint would be made. “The complaint is not about the decision. The complaint is about the selection of the referees," he said. "One of the most inexperienced referees for one of the most difficult matches of the season involving another four or five teams. It's not about the decision. The decision is clear. It's a mistake. "The referee apologised for the mistake. We can do nothing. The problem is why the experienced international referees were not here today.” On Emi Martinez's sending off after a clash with United striker Rasmus Hojlund due to Matty Cash's sloppy back pass, Gallagher added: "The goalkeeper makes no attempt to play the ball. Red card."