I think that was implying that City was by far the toughest pot 3 team so teams wanted to avoid them in their group.
the even more absurd situation was that Borussia Dortmund, as champion of the german Bundesliga, was put into the pot 4. it shows how ridiculous this current drawing mathematics are
theoretical there could have been a group with
Barcelona (1. La Liga)
AC Mailand (1. Serie A)
Ajax Amsterdam ( 1. Ehredivisie)
Borussia Dortmund (1. Bundesliga)
meanwhile Arsenal, as 4th of the Premier League, or Bayern München as 3rd of the Bundesliga get thrown into Pot 1
the system should be about the champions of the top leagues getting easier draws , not the the teams which had been there the last years year getting a break.. this way teams which are often 3., 2. in the top leagues have a big advantage over the breakout team which gets that single championship