Lask have done reasonably well in the Europa the last few seasons. 19/20 they won their group which contained Sporting, PSV & Rosenberg. Beat AZ in last 32 before getting a bit of a doing from Man United in the last 16. You may remember that one from right before the football stoppage for covid. Finished 3rd in Spurs group last season though with 10 points - decent return and unlucky not go go through.
You'd expect it to be between them Rennes (obviously), Lask, Tel-Aviv & Anderlecht but we'll soon find out!
Might be only something Anderlecht need to worry about.