Spain will fine tune their preparations for this summer's UEFA Euro 2016 by hosting a friendly against Bosnia and Herzegovina at the AFG Arena in Switzerland on Sunday.
Manager Vicente del Bosque may hand playing time to a host of intriguing, previously uncapped players, since he can't call on Real Madrid and Atletico Madrid stars because of their UEFA Champions League final commitments.
But the veteran coach will also be wary of the quality of a Bosnia squad boasting talents such as AS Roma team-mates Miralem Pjanic and Edin Dzeko.
Del Bosque will want to see an assured performance ahead of Spain's title defence in France.