By Richard Martin BARCELONA (Reuters) - Barcelona supporters plan to display 30,000 pro-Catalan independence flags during their Champions League game with Celtic at the Nou Camp on Tuesday, risking the wrath of European soccer's governing body UEFA. The club were fined 30,000 euros ($34,000) last July after supporters waved the flags, known as esteladas, during the 2015 Champions League final in Berlin. UEFA's Control, Ethics and Disciplinary Body ruled the club had breached article 16(2)(e) of their regulations, which prohibits "the use of gestures, words, objects or any other means to transmit any message that is not fit for a sports event, particularly messages that are of a political, ideological, religious, offensive or provocative nature". More...