Sorry, I´m talking about the Canary Islands, not Majorica, but yeah, the brits could be good contenders to the islands rule. For me the best option is a Norman County under Maciot Bethencourt progeny but I´m not quite sure about how the iberian kingdoms would response against that. I imagine that it would remain as a vasall state of Castille but the continuing civil war in the peninsula could allow a degree of independence for such a distant county in the mid XV and after that, if they can manage portuguese, castilians, french, brits, turks and the Netherlands, they are in a great junction to become a powerful country.
Right my bad, I got the Canarys and Balearics mixed up