Albion will open their Europa League campaign at the Amex.
The Seagulls host AEK Athens in Group B on Thursday, September 21.
They go to Marseille on October 5, then welcome Ajax to Falmer on October 26.
The return in Amsterdam is on November 9, followed by a trip to Athens on November 30.
The group stage concludes at the Amex against Marseille on December 24.
The three home games all kick off at 8pm our time with all the away games at 5.45pm.
Marseille were unimpressive last night – other than in the opening 15 minutes - as they drew 1-1 away to a Nantes side who played more than 80 minutes with ten men.
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