Ackwei made his debut in Ghanaian professional football during the 2015 season with Inter Allies FC in the Ghanaian Division One. Ackwei scored his first goal for Inter Allies on 20 March 2017 in a 1–0 victory over Tema Youth F.C.[1] On 28 June 2017 he scored the loan goal for Inter Allies in a 1–0 victory over Bechem United.[2] On 8 October 2017 Ackwei scored his team's opening goal from the penalty spot in a 2–0 victory over Medeama S.C.[3] At the conclusion of the 2017 season in which he scored 3 goals in 23 appearances it was reported that clubs from Europe and Major League Soccer were in pursuit of the defender.[4]
Ackwei played at the club for three years before leaving at the expiration of his contract during December 2017.[5] After leaving Inter Allies, it was reported that Ackwei had an offer from
Accra Hearts of Oak after a deal with Danish club Viborg FF failed to materialize.[6]
^"Ackwei agrees terms with Hearts". sunnews.info. 20 December 2017. Archived from the original on 23 December 2017. Retrieved 21 December 2017.{{cite web}}: CS1 maint: unfit URL (link)