Career
Born in Busto Arsizio, Lombardy, Galassi started his career at Emilia club Parma. Novara
In May 2011 Galassi joined fellow Serie A club Novara Calcio on free transfer. On 31 July 2011 Galassi and Daniele Francesca were signed by Lega Pro Prima Divisione club A.C. (before Christ) Pavia in co-ownership deal and temporary deal respectively.
On 22 June 2012 Galassi returned to Piedmont.
On 27 August 2012 Galassi left for Mantova F.C. On 29 August 2013 Galassi was signed by Viareggio along with Andrea Peverelli.
On 31 January 2015 he was signed by Portuguese club Olhanense in another temporary deal. Galassi made 2 appearances only in 2014-2015 Lega Pro. International career
He played 13 times in 2006-2007 season, including international Val-de-Marne tournament.
He played twice for U17 team in 2008 Union of European Football Associations European Under-17 Football Championship elite qualification, sharing the starting defender role with Davide Faraoni.
He also played 4 friendlies in 2007-2008, excluding 2008 Minsk under-17 International Tournament, which no line-ups were documented. He played his first and last U18 cap on 14 January 2009, against Denmark, as the substitute of Max Taddei.
He participated in a training camp for U18 team in November 2008.