One of the Chelsea fans who was chased and attacked by '20 or 30' Napoli supporters ahead of their Champions League clash has spoken of his 'shock' at being stabbed during the incident. As detailed by Daily Mail Sport, two Chelsea fans were admitted to hospital on Tuesday night where they were treated for non-life-threatening injuries. Following the incident, Chelsea released a statement urging their travelling supporters to take 'extreme caution' in Naples. There were 2,500 tickets allocated for Chelsea fans at the Stadio Diego Armando Maradona'Two fans are being treated in hospital, having sustained non-life-threatening injuries. There were 2,500 tickets allocated for Chelsea fans at Napoli and a police escort accompanied free shuttle buses for those to get to the ground.