By James Cormack Spain’s supreme rivalry reignites yet again on Sunday as Real Madrid play host to Barcelona in El Clasico. It’s a contest that’s certainly lost some of its allure from the Pep Guardiola-Jose Mourinho era, but there are hints that the great fixture could once again emerge at the forefront of European football. A big Clasico awaits this weekend with Barcelona needing all three points to preserve their La Liga title hopes. Barca have recovered impressively since Xavi’s announcement regarding his future, but their deficit to league leaders Madrid is still eight points. Carlo Ancel…