Born in Bologna, Emilia, Pasi started his professional career at Bologna F.C. 1909. He was the member of the reserve from 2006–07 season to the first half of 2009–10 season.
In January 2010 Bologna swapped him with Alessandro Elia of Parma in co-ownership deal. Both players' 50% registration rights were "valued" €1 million It made both Emilia clubs had a selling paper profit of about €2 million for both players, but in terms of the contract value of new signing. The profit would compensate by the future amortization and VAT, which Elia and Pasi had both costed Bologna about €650,000 in 1½ years as amortization Both players made a handful appearances for their new clubs. Pasi made his Serie A debut for Parma F.C. on 18 April 2010 in a game against Genoa C.F.C. when he came on as a substitute in the 80th minute for Luca Antonelli, which is his only appearance for Parma first team. He also played a few games for Parma's reserve, such as the return leg of the round 16 match of the playoffs round. Pasi spent a season with Modena F.C. in 2010–11 Serie B.
Return to Bologna
The reverse switch happened on 24 June 2011. Elia 50% registration rights was "valued" €1.5 million and Pasi for €1.6 million respectively. In June Parma also bought Francesco Valiani outright for €2.8 million and co-currently sold Andrea Pisanu outright for €2.5 million. The four deals made Bologna received €200,000 in net. The return of Elia and Pasi made both club received a paper selling profit on both players, for €1.6M and €1.7M respectively for 2010–11 season., but majority in terms of new contract value of Elia and Pasi. Furthermore, both club had to amortize the contract value as an intangible asset. As Pasi signed a new 4-year contract, Pasi would cost Bologna €800,000 as amortization plus wage in 2011–12 and next 3 seasons, but Pasi failed to generate any real benefit nor revenue to the club. On 16 January 2012 Bologna confirmed his temporary loan to Swiss Challenge League side FC Chiasso. In summer 2012 he was signed by South Tyrol. In summer 2013 he remained in the lower divisions for Santarcangelo. Pasi finally made his Bologna debut after the club relegated to 2014–15 Serie B.
