Manchester United's Cristiano Ronaldo celebrates scoring their third goal during the Premier League between Manchester United vs Arsenal at Old Trafford, Manchester, December 2, 2021. Cristiano Ronaldo passed the 800-goal mark for club and country, scoring twice as Manchester United beat Arsenal 3-2 in an incident-packed Premier League match. REUTERS/Phil Noble

Manchester United's Cristiano Ronaldo scores their third goal from the penalty spot during the Premier League between Manchester United vs Arsenal at Old Trafford, Manchester, December 2, 2021. REUTERS/Phil Noble

Arsenal's Aaron Ramsdale saves a shot from Manchester United's Cristiano Ronaldo during the Premier League between Manchester United vs Arsenal at Old Trafford, Manchester, December 2, 2021. REUTERS/Phil Noble

Manchester United's Cristiano Ronaldo shoots at goal during the Premier League between Manchester United vs Arsenal at Old Trafford, Manchester, December 2, 2021. REUTERS/Phil Noble

Manchester United's Cristiano Ronaldo scores their second goal during the Premier League between Manchester United vs Arsenal at Old Trafford, Manchester, December 2, 2021. REUTERS/Phil Noble

Manchester United's Cristiano Ronaldo celebrates scoring their second goal with Bruno Fernandes during the Premier League between Manchester United vs Arsenal at Old Trafford, Manchester, December 2, 2021. REUTERS/Phil Noble