That's my suggestion.
Manchester United never be compared in performance to Manchester City. Manchester is very stronger in defense than Manchester United, Manchester United are not stable in performance they are still struggling to meet up . I don't think if Manchester United can defeat Manchester city with their performance right now.
Now, we have match between Manchester City vs Atlético Madrid after lost of Manchester United against Atlético Madrid now peoples feeling they can beat them as well, but it's not easy like they have done against city rival because no things are completely different, and they need to have some extraordinary performance for beating Pepe's men's.