Career
Alhassan was born in Accra, but graduated from Genoa"s youth academy, and appeared on the bench with the first-team during the 2012-2013 season. On 12 July 2013 he was loaned to Cesena. On 13 September Alhassan made his professional debut, starting in a 1–2 loss at Palermo.
On 30 August 2015 he was signed by Carrarese.