6,000 fans will be at the Aviva for the Bohs match.
Bohemians and Sligo Rovers are both in Europa Conference League action tonight.
Bohemians will be cheered on by 6 thousand fans at the Aviva Stadium for their match against Stjarnan (PR: St-ee-ar-nan) of Iceland.
It is tied at 1 goal apiece after the first leg.
That match kicks off at 7.45.
Sligo welcome another team from Iceland, FH, to the Showgrounds for a 6pm start.