Born in Somalia, Ali moved to Canada at a young age.[1] He began playing youth football with Earl Grey Community Centre.[2] From 2005 to 2009, he played with Winnipeg South End United SC.[3] In 2010, he began playing with WSA Winnipeg.[3] He also played for the Manitoba provincial team in 2009 and 2011.[3] In 2011, he joined the Vancouver Whitecaps Academy.[3] After returning to WSA Winnipeg, he returned to the Whitecaps Academy in 2014.[3] In 2013, he was awarded the Manitoba Soccer Special Achievement Award.[2]
In 2017, Musse began playing for the Calgary Foothills. In the season debut on May 5, 2017, he scored the winning goal in a 4-3 victory over the TSS FC Rovers.[11] He helped the team reach the PDL final in 2017.[12][13] In 2018, he scored five goals in four playoff games as the Foothills won the PDL title, including scoring two goals in extra time in the championship final victory over Reading United AC.[14][15]
In February 2019, Musse signed a professional contract with Canadian Premier League club Valour FC, from his hometown of Winnipeg.[16][17]FC Edmonton had also sought to sign him, with his family now based out of Edmonton, but he chose to return to Winnipeg and sign with Valour to re-unite with head coach Rob Gale who he had played for during his time in the Canada national team program.[18][19] He scored his first goal on June 2, 2019 against FC Edmonton in a 1-0 victory.[20] Ahead of the 2020 season, he was released by the club.[21][22]
In June 2021, Musse returned to Calgary and signed with Canadian club Cavalry FC on a one-year contract.[24] On July 14, 2022, he scored a brace in a 3-0 victory over HFX Wanderers FC.[25] He missed much of his first season due to injury.[26] On October 2, 2022, he scored the winning goal in a 2-1 victory over Valour FC to clinch a playoff spot for the club.[27][28] Musse led the club in scoring in 2022 with seven goals and four assists, across all competitions.[29] In January 2023, Musse signed a new two-year deal with Cavalry, with an option for 2025.[30][31] At the end of the 2023 season, Musse won the CPL Player's Player of the Year award[32][33] and was named to the CPL Best XI.[34] On August 3, 2024, he scored a brace in a 2-1 victory over Atlético Ottawa, in his first match following a three-month absence due to injury.[35]
International career
Canada
In the summer of 2007, he attended a Canada national team evaluation camp.[36] In November 2011, Musse received his first Canadian youth national team call-up for a Canada U16 camp in Costa Rica.[2] He was subsequently named to the squad for the 2013 CONCACAF U-17 Championship, where he won a bronze medal, as well as playing at the 2013 FIFA U-17 World Cup.[2][37]
Somalia
In December 2019, Musse was called up by Somalia for the 2019 CECAFA Cup.[38][39] He made his debut as a starter in the opening match in a 0–0 draw against Djibouti.[39]
Personal
Musse is a devout Muslim and maintains the Ramadan fast during the football season.[40][41]