Unfortunately yes, Macron and Juncker have already said that if Britain is no longer part of the EU then they need not necessarily be part of its cultural interlinks either, whereby aspects like participation in the UEFA Champions League will need to bartered on during the next phase of the divorce negotiations. Clubs from non-EU countries like Russia and Israel participate on an invite basis similar to that of Cardiff participating in the English football leagues, so this invite may well not be extended to ourselves in the case of an acrimonious divorce.