By Gabriel Ameh, The Sight News
Two seeding pots were formed: one consisting of group winners and the four best third-ranked teams in the UEFA Champions League group stage; the other containing group runners-up and the remaining third-placed UEFA Champions League sides.
No team could play a club from their UEFA Europa League group or a side from the same national association.
Based on decisions taken by the UEFA Executive Committee, teams from Russia and Ukraine could not be drawn together either.
Graham potter, the only English manger in the draw, will take his Ostersunds side to Arsenal, while celtic will play Zenith St.Petersburg.
Round of 32 draw
Borussia Dortmund (GER) v Atalanta (ITA)
Nice (FRA) v Lokomotiv Moskva (RUS)
København (DEN) v Atlético Madrid (ESP)
Spartak Moskva (RUS) v Athletic Club (ESP)
AEK Athens (GRE) v Dynamo Kyiv (UKR)
Celtic (SCO) v Zenit (RUS)
Napoli (ITA) v RB Leipzig (GER)
Crvena zvezda (SRB) v CSKA Moskva (RUS)*
Lyon (FRA) v Villarreal (ESP)
Real Sociedad (ESP) v Salzburg (AUT)
Partizan (SRB) v Viktoria Plzeň (CZE)
FCSB (ROU) v Lazio (ITA)
Ludogorets (BUL) v AC Milan (ITA)
Astana (KAZ) v Sporting CP (POR)
Östersund (SWE) v Arsenal (ENG)
Marseille (FRA) v Braga (POR)
Of the 16 pairings, only two have happened before in UEFA club competition. Atlético beat København 2-0 in the 2007/08 UEFA Cup group stage while Marseille and Braga managed a win apiece in the UEFA Europa League group phase two seasons ago.
Sporting CP and Astana will complete some of the longest journeys in UEFA football history for their tie, the 6,173km trip between Portugal and Kazakhstan matching the distance covered by Benfica and Astana in the 2015/16 UEFA Champions’ League group stage.
Lyon are bidding to become only the second team to win at their own stadium since one-match finals in pre-selected venues were introduced in 1998.
Feyenoord beat Dortmund in Rotterdam in 2002; Sporting CP lost to CSKA Moskva in Lisbon three years later.
Napoli and Leipzig, two of the eight sides that transferred from the UEFA Champions League after the group stage, were paired.
