Firmani's streak with injuries continued throughout the following campaign and, due to several physical problems, he did not feature whatsoever for his team. He did however, receive a red card during the 1–4 home loss to Cagliari Calcio, when he reacted to an incident involving opponent Daniele Conti and Goran Pandev. He received adulation and support from the Lazio fans following the incident, due to the insipid nature of the team's performance – a popular message was then adopted by the side's faithful, "Noi vogliamo undici Firmani" (We want eleven Firmanis).