There should not be half’n’half scarves for any matches.
Not just the scarves but all and any ‘colours’ of other clubs should be banned in the home ends at the Etihad.
In just the last two seasons, I’ve seen shirts of River Plate, the Mexican national team, Ukraine, Hajduk Split, some Saudi team, New York City, Celtic (genuinely! against Fulham last season), Hull City…
There was someone with a Liverpool scarf at a game that wasn’t against Lpool (and it wasn’t a h’n’h scarf, but proper full Lpool scarf).
There should be Ts&Cs introduced that ban entrance to the stadium with the badges, shirts, coats, hats, scarves… ‘colours’… of any club that’s not City.