On-loan Baba Rahman will play in Europe for the second consecutive season when Schalke 04 battle Red Bull Salzburg, Nice and FC Kranosdar in Group I of the Europa League.
Rahman enjoyed Champions League football with Chelsea where he made four appearances.
The 22-year-old garnered valuable experiences from his one season stay at Stamford Bridge and will put them to good use for the Royal Blues.
Schalke open their campaign on 15 September.