Bilbao would probably work out of NCL, more so than it would from BRS. I believe that there is a fairly large ex-pat population of 'ethnic mackems'(!) in the basque regions, given a large number of miners that relocated years and years ago.
Athletic Bilbao got their stripes from Sunderland AFC, hence the Anglicized name of the team. Whether these miners returned home, I don't know. I assume that many stayed, and therefore a market could be made for NCL-BIO