I understand that Finn's dad has indeed sadly passed, but that shouldn't really affect his getting an Irish passport. He's an Irish citizen - it should just be a question of getting hold of the dad's birth cert (he's from Mayo so they would just need to contact the Births, Deaths and Marriages office in Castlebar) and sending it off with his own birth cert and the form and it would be done in three or four weeks. I'd be surprised if that is the reason he's not a full squad member.