Manchester United v Manchester City, Jose Mourinho v Pep Guardiola. An intensive rivalry with an extra dimension this season.
The two teams with 100% records in the Premier League this season meet at Old Trafford at 12:30 BST on Saturday – and something has to give.
But if you could pick a starting XI from the multitude of talent available to both managers who would you go for?
Raheem Sterling or Marcus Rashford? David Silva or Wayne Rooney? John Stones or Eric Bailly?
Use our squad selector and pick what you think is the best the two squads have to offer and then share it with your friends.
Who would be in your combined Manchester XI? Pick your XI – and then share it with your friends.