Abdullahi Ibrahim Alhassan (born 3 November 1996), known as Mu'azzam, is a Nigerian professional footballer who plays as a midfielder for Liga Portugal 2 club Leixões.
In late 2015, after receiving offers from teams in Belgium, England, Sweden and Croatia, Alhassan suffered an injury after trials at HNK Rijeka.
After recovering, and seeking to maintain his fitness, midway through the 2015–16 NPFL season he signed a 6-month deal with the Nigeria Professional Football League side Wikki Tourists.
[1] At the end of the 2015–16 NPFL season, Alhassan decided to follow mentor-coach Abdu Maikaba from Wikki to Akwa United F.C.
Alhassan signed on a one-year loan with a three-year extension option with FK Austria Wien on 25 August 2017.
[8] Alhassan left the club on 1 September 2024, as Boavista was unable to lift the ban on registering new players by the end of the transfer window.