GRIMSBY TOWN star Christy Pym stunned fans during his celebrations after knocking Manchester United out of the Carabao Cup.The goalkeeper revealed that he was a Red Devils supporter and that he was “half-fuming” by the result.Shutterstock EditorialChristy Pym was one of Grimsby’s heroes against Manchester United[/caption]AlamyHe saved a penalty from Matheus Cunha[/caption]Shutterstock EditorialHe admitted he was a United supporter after the game[/caption]Pym, 30, made some crucial interventions during the match to stop United from managing a full turnaround and instead forcing a penalty shootout.He even stepped up in the spot kicks and denied Matheus Cunha to stop Grimsby being knocked out before sudden death.Though that would be his only save as Bryan Mbeumo would miss his second penalty to hand the win to the Mariners.But Pym’s stunning moment came during his post-match interview as he revealed he could not full enjoy the win due to his split loyalties.He told Sky Sports: “It’s not sunk in yet.“I’m a Man Utd fan, so I’m half-fuming a little bit.“Night’s like this is what you play football for. Just brilliant.“I should have done a little bit better (in the shootout), shouldn’t I?SUN VEGAS WELCOME OFFER: GET £50 BONUS WHEN YOU JOIN“I made one save to keep us in it and the boys have done the rest. It’s brilliant.”Pym had only made the move to Blundell Park last month as he signed a two-year deal. He was a free agent after leaving Mansfield Town earlier this summer.But he was being cheered on by Stags fans 150 miles away who watched on at the Bramley Moore Hotel after their defeat to Everton.But for his team-mate and goalscorer Tyrell Warren the victory was even sweeter.He had spent his youth at the academy of United and played alongside Marcus Rashford and Scott McTominay.Carabao Cup third round drawHere are the fixtures of the third round of the Carabao Cup...Port Vale vs ArsenalLincoln City vs ChelseaTottenham vs DoncasterHuddersfield vs Manchester CityLiverpool vs SouthamptonFulham vs CambridgeBrentford vs Aston VillaBarnsley vs BrightonSwansea vs Nottingham ForestNewcastle United vs BradfordSheffield Wednesday vs Grimsby TownWolves vs EvertonCrystal Palace vs MillwallBurnley vs Cardiff CityWrexham vs ReadingWigan Athletic vs Wycombe WanderersHowever, he was released in 2019 and has rebuilt his career in the English Football League.Grimsby and Pym have been rewarded with another big game in the third round of the Carabao Cup, facing Sheffield Wednesday.They edged out Leeds United after a penalty shootout on Tuesday night.The Whites should have put the game to bed but Dominic Calvert-Lewin had a shocker of a debut as he missed THREE SITTERS.MAN UTD TRANSFER NEWS LIVE: All the latest deals and rumours from Old Trafford