[Getty Images]Former Chelsea winger Pat Nevin has hailed the Blues' "complete" display that "completely and utterly stifled" Barcelona.Enzo Maresca's side outplayed the Spanish giants in the Champions League, storming to a 3-0 victory even without star attacker Cole Palmer."It was a complete performance from Chelsea," Nevin told BBC Radio 5 Live's Football Daily podcast. "Because Barcelona had that good 10-15 minute period you thought: 'Right, this is a very good team'. But they were just blown