Manchester United fans were appalled at the first-half display from their team as they conceded two goals in their Premier League opener against Brighton & Hove Albion at Old Trafford on Sunday. The supporters were understandably angry at many of their players, especially as they failed to score or use their possession on the ball effectively.However, one player in particular has drawn the fans' ire: Scott McTominay. The midfielder was rather uninspiring throughout the first half, even picking up a yellow card after a horror tackle on an opposition player.Manchester United supporters have taken to Twitter to slam the midfielder's performance, and they will be expecting manager Erik ten Hag to substitute him in the second half. The poor showing from McTominay had fans tweeting their angry opinions, and here is a selection of their tweets:James.@afcjxmesNever seen a player get away with as many horrible challenges as McTominay1636108Never seen a player get away with as many horrible challenges as McTominayRich@RichRedVoicesThere are plenty of issues to address in this team, but Scott Mctominay will always be the greatest of them.4715There are plenty of issues to address in this team, but Scott Mctominay will always be the greatest of them..@NigerianscamsssJose Mourinho is the gateway drug to the Scott McTominay experience.It’s all his fault.25974Jose Mourinho is the gateway drug to the Scott McTominay experience.It’s all his fault.Ste Howson@MrStephenHowsonIf Maguire, Shaw or McTominay start more than 20 games we won’t do fuck all.3144428If Maguire, Shaw or McTominay start more than 20 games we won’t do fuck all.Frank 🇩🇪@UTDFrankieMctominay is a danger to anyone on that pitch, send him off.1315Mctominay is a danger to anyone on that pitch, send him off.Tяυsτ №¹-Yahya™@RealistYahzMctominay is worst footballer i’ve ever seen18918Mctominay is worst footballer i’ve ever seenNATURE vs NURTURE@ScamzelMcTominay is a danger to himself, his teammates and the opposition510216McTominay is a danger to himself, his teammates and the oppositionBrett@utdBrettMcTominay can still get a forklift license618McTominay can still get a forklift licenseJordan@FourFourJordanMcTominay is a squad player at best if we want to win things. Perhaps introduced in big games. Needs 47 touches to make a decision.14012McTominay is a squad player at best if we want to win things. Perhaps introduced in big games. Needs 47 touches to make a decision.Alex@AA_utdIn my lifetime watching United there has never been a first team regular starter as bad as McTominay, I can't believe I used to complain about Tom Cleverley.12015In my lifetime watching United there has never been a first team regular starter as bad as McTominay, I can't believe I used to complain about Tom Cleverley.Zidane_realist🇯🇲@RealistZidaneMctominay is such a useless fuckI honestly feel like to get on that pitch and give him a backhand. What a joke of a player6310Mctominay is such a useless fuckI honestly feel like to get on that pitch and give him a backhand. What a joke of a playerWith many fans noting that McTominay's first-half performance showcased the worst they had seen, the midfielder will clearly need to sit up in the second half.Manchester United 0-2 Brighton & Hove Albion: First half sees Red Devils concede two at Old TraffordThe Red Devils had more of the possession in the first half as they held the ball for long periods in their own half. While Brighton have not had as much possession, they haven't needed to hold on to the ball. The Seagulls provided a brilliant display with the time they had on the ball, as they were highly effective and sought out chances in the final third.Erik ten Hag will look to to make some important changes in the second half. The Seagulls have enjoyed a lot of space in their attacking third and both their goals have come from through-passes. If Ten Hag does not tighten the defensive line and lock out the fast Brighton attackers, Manchester United might be in for a tough second half.Pascal Gross was the star of the first half as he silenced Old Trafford with a brace. An assist from Danny Welbeck on the flank provided the first goal, while Gross pounced on a rebound opportunity to score the second.