Teams also benefit with 20% of their association's coefficient over the previous five years - so sides from countries with a track record of European success benefit, even if they haven't contributed themselves.
By virtue of Manchester United's Europa League victory, last season, the Premier League team has been awarded an extra spot in this season's Champions League, with United joining rivals City in pot two of tomorrow's draw at the Grimaldi Forum in Monaco.
Three Children Pulled From Earthquake Rubble
A woman has died and several others are missing after an Italian island was struck by a 3.6 magnitude quake on Monday evening. More than 2,500 people have been rendered homeless or displaced, and almost 1,500 people have fled the island.
The draw ceremony begins at 5pm United Kingdom time and Celtic will be drawn against one of Real Madrid, Bayern Munich, Chelsea, Juventus, Monaco, Spartak Moscow, Benfica or Shakhtar Donetsk from pot one. The champions of France, Portugal, Russia and Ukraine are automatically placed into Pot 1, which bumps big clubs like Barcelona, Atlético Madrid, Paris Saint-Germain and Borussia Dortmund into Pot 2.
The final takes place at the NSK Olimpiyskyi in Kiev on May 26, 2018.
Pot 4: CSKA Moscow/, Maribor, Celtic, APOEL/, Feyenord, FK /, Leipzig, and Steaua Bucharest/.
AP Moller sells Maersk Oil to Total for $7.45bn
The move is the latest in a wave of consolidation that has gripped the sector in recent years in response to the low oil price . Total will take over Maersk Oil's entire organisation, portfolio, obligations and rights with minimal pre-conditions.
As we'll recall, the 32 participants are divided into four pots of eight, from which the eight groups of four will be drawn.
What pot are the remaining British clubs in?Most of the top clubs in the world that you'd expect to see are back - Real Madrid, FC Barcelona, Bayern Munich and the like - but there are some new faces too.
Borussia Dortmund chief Watzke slams 'glorious' Barcelona as Dembele soap opera continues
Watzke added in his Sky Germany interview: "You have to talk about the role of the glorious club FC Barcelona ". If it is fulfilled, Dembélé will be transferred this summer.