Dortmund and Atlético are among eight teams that have switched to the UEFA Europa League after finishing third in their UEFA Champions League groups.
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Eight teams have transferred to the UEFA Europa League round of 32 after finishing third in their UEFA Champions League groups.
Seeded: CSKA Moskva (RUS, 9pts), Atlético Madrid (ESP, 7), Leipzig (GER, 7), Sporting CP (POR, 7)
Unseeded: Spartak Moskva (RUS, 6), Napoli (ITA, 6), Celtic (SCO, 3), Dortmund (GER, 2)
In the round of 32, the four third-place finishers with the best records in the UEFA Champions League group stage are seeded along with the 12 UEFA Europa League group winners. The remaining four third-placed UEFA Champions League sides are unseeded together with the 12 UEFA Europa League group runners-up.
The round of 32 draw takes place on Monday and will be streamed live in UEFA.com's DrawCentre from 13:00CET.