Mustafa was at the Academy in Exeter in 2014 to 2016.
He was one of eight members of the Under-18s set-up, who having completed their two-year scholarships with the Grecians in the summer of 2016 were not offered a contract.

Mustafa then studied physiotherapy at Hartpury College. 

In September 2020 he was playing for Axminster Town in SW Peninsula League.