The Champions League group stage draw takes place on Thursday in Monaco, with Manchester United and City waiting to hear who they'll face this autumn.
United, who reached the last 16 last season, are seeded in pot one so will avoid Europe's elite clubs such as Barcelona, Real Madrid and current champions Bayern Munich.
But City, who were knocked out in the group stage last time, are only ranked 22nd of the 32 teams to enter this stage of competition. So they'll be fearing another 'Group of Death' this year.
At least, in new manager Manuel Pellegrini, they have a leader with Champions League experience. The Chilean took Villarreal to the semi-finals in 2006.
It will be United boss David Moyes's first taste of the group stage. His only other Champions League history coming as Everton lost their qualifier - against Pellegrini's Villarreal - in 2005.