‘Basic error’ – Gary Neville and Roy Keane slam Manchester United star Casemiro after Leandro Trossard opens scoring for Arsenal

Casemiro was partly at fault for Arsenal’s first-half goal (Picture: Getty)Gary Neville took aim at Casemiro after the makeshift defender’s ‘basic error’ allowed Leandro Trossard to open the scoring for Arsenal against Manchester United.Hosts United started the game promisingly against Premier League title hopefuls Arsenal but fell behind after 20 minutes after Ben White found Kai Havertz down the right flank, with Casemiro keeping the German onside at Old Trafford.Trossa