Radek Vitek was Manchester United’s best player in the pre-season friendly against Rosenborg. They always say ‘don’t overreact to pre-season’. But Manchester United fans were spot on to be encouraged about Kobbie Mainoo a year ago. And sometimes a player drops a performance that underlines everything you have learned about him during the previous two years. Step forward goalkeeper Radek Vitek, who was excellent in Manchester United’s opening pre-season friendly of 2024. READ MORE: Manchester United confirmed signings, transfers in, out, loan exits, releases for 2024/25Radek Vitek shows his qua…