He spent most of his career in Spain, amassing La Liga totals of 175 games and 22 goals over the course of seven seasons and representing mainly Racing de Santander and Real Sociedad.

Born in Ibadan, Adepoju (also called by his first name in Spain) left Nigeria in 1989 to join Real Madrid, but never made it past their reserves.

The 1992–93 season was impressive as he scored 11 Segunda División goals to help Racing de Santander return to La Liga,[2][3] and he continued to feature regularly for the Cantabrians over the next three years.

Mutiu left for Real Sociedad for 1996–97 but, after a solid first campaign, struggled heavily to hold down a regular place with the Basques.

[6] Adepoju was part of Nigeria's squads for the FIFA World Cups in 1994, 1998 – where he scored in a 3–2 win against Spain[7]– and 2002, although he did not play in the latter tournament.