If OWC were to qualify would they more than likely get a couple of the Aviva based games?
Only if they were drawn in the Dublin-Bilbao group (group E). Spain will definitely be there, so only 2/3 spots left in that group, depending on whether Ireland qualify or not. There is no group that you could say for sure that both host nations will qualify.
Group A: Rome and Baku
Group B: Saint Petersburg and Copenhagen
Group C: Amsterdam and Bucharest
Group D: London and Glasgow
Group E: Bilbao and Dublin
Group F: Munich and Budapest