Armstrong Oko-Flex was born in Dublin on 2 March 2002 (age 24) and came through the youth ranks with Arsenal before Celtic brought him north in September 2018. A left winger, he arrived with a bit of pedigree and the usual curiosity attached to a young player taken from a major English academy.
His Celtic spell was part of his development rather than a settled first-team career. He left in July 2021 for West Ham United, moving back into the English system after three years in Glasgow. From there, his career began to spread out across different leagues rather than follow a straight line.
After West Ham, Oko-Flex had spells with Botev Plovdiv and Levski Sofia, and later established himself more fully at FC Zurich. His most productive league season came at Botev Plovdiv in 2025-26, when he scored six goals in 14 league appearances.
At Levski Sofia in 2026-27, he has made six appearances across all competitions, scoring twice in Champions League qualifying. It is a career that began with Arsenal and Celtic promise, then moved through England, Bulgaria and Switzerland as he looked for regular senior footing.
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