Chelsea will play Swiss side Servette in the UEFA Conference League play-off round.
Servette lost to Braga on Thursday in their UEFA Europa League third qualifying round with an aggregate score of 2-1.
Subsequently, Servette has been demoted to play in the Conference League, and will now face Chelsea in a play-off tie.
This will be the first meeting between the clubs since 1946 when Chelsea won 2-0 during a post-season tour in Switzerland.
The first leg will take place at Stamford Bridge on Thursday, August 22, while the return leg will be in Switzerland on August 29.