Premier League: Cristiano Ronaldo goes past 800-goal mark as Manchester United clinch stunning 3-2 win over Arsenal

New interim manager Ralf Rangnick was not in-charge of Manchester United on Thursday but he was at the stands in Old Trafford watching a rip-roaring Premier League win over Arsenal as he got a taste of life at one of the biggest European clubs. Caretaker manager Michael Carrick was at the helm in what turned out to be…