Career
He also holds Italian citizenship. Cossu was born in the Nigerian city of Buguma. The Cossu family immigrated 1990 to Italian city Foligno from his native Nigeria.
Coassu left for Giulianova in 2002-2003 season and returned to Ternana in January 2003.
In January 2006 he was signed by Triestina. In the 2007-2008 season he was loaned to Paganese.
Universitatea Craiova
In February 2011, Andrea Cossu signed a contract with the Romanian club Football Club Universitatea Craiova of Liga 1.