Following his loan spell at Modena came to an end, Mensah returned to Chievo ahead of the 2004–05 season. He then played in both legs against Torino in Coppa Italia, which saw Chievo lose 2–1 on aggregate. However, Mensah continued to find his first team opportunities at the club limited throughout the season. It was not until on 16 January 2005 when he made his first league appearance of the season, starting the whole game, in a 2–2 draw against Roma. Mensah was later featured in and out of the starting line–up as the season goes by. However, he was sent–off for a straight red card, in a 1–0 loss against Sampdoria on 6 March 2005. Despite this, Mensah went on to make eleven appearances in all competitions.