Complex sentence: Graeme Souness, with the great feeling of a great victory, took a giant Galatasaray flag and planted it in the centre of the pitch causing annoyance to the Fenerbahce fans, of course though he was the hero for all Galatasaray fans that day.
Split into simpler sentences: Graeme Souness, with the great feeling of a great victory, took a giant Galatasaray flag and planted it in the centre of the pitch. This wasn't appreciated by the Fenerbahce fans of course but he was the hero for all Galatasaray fans that day.