I don't really get what they're moaning about. Juventus will pose them a real challenge, though City should be looking for at least a home win from the ties, but if they genuinely have ambitions of winning the thing, with all due respect to Sevilla and Monchengladbach, they shouldn't threaten City too much.
They'd have been moaning over on Bluemoon had they drawn PSV, Olympiacos and Gent, probably with the excuse that they were in a group with 3 champions.
Their first CL group contained Villarreal, who got relegated from La Liga that season, Napoli, and Bayern Munich. Second should have been nailed on for them there, but they ended up getting dumped into the Europa League where they failed to get through the last 16.
Their second CL group was tough, but this is always a possibility, and their failure to do anything of note in either the Europa League or Champions League in the season prior is what cost them. Still, Ajax should have found themselves bottom of that group, and City's failure to win a single game was just shocking.
Their third CL group contained just Bayern as a threat, and despite City finding themselves needing just one goal to secure top spot, they took their foot off the gas in the final group game and found themselves draw against Barca in the last 16, when they could have found themselves playing the likes of Galatasaray, Olympiakos, Bayer Leverkusen, Schalke, or Zenit.
Last season they had Roma and Bayern as their main opposition, but really Bayern should have been their only real threat. After under performing in both matches against CSKA, coming away with just a point, failing to beat Roma in either attempt, City once again found themselves finishing second, and once again, drawing Barca in the first knockout round.
They can't seriously believe that they should be handed piss-easy draws. It's very rare that they happen now anyway because the strength of the sides in Pot 3 is much better than it was in previous years, and there's occasionally a Pot 4 side with the potential to cause an upset. The best they could have hoped for this season was PSV, Olympiakos and Astana, and given their past form I wouldn't put it past them to have fecked that up and ended up second anyway.