On 26 July 2006, he scored a 92nd minute equalizing goal for Sheriff against Spartak Moscow in the second qualifying round of the 2006–07 UEFA Champions League.

In the role of Henrik Larsson's strike partner, Omotoyossi finished the 2007 season as joint top scorer having scored 14 goals in 23 games.

His first goal came in the first leg of the first qualifying round home win over Estonian Meistriliiga side Narva Trans on 19 July 2007, and he then scored in the second qualifying round, second leg, a 3–0 home win over League of Ireland Premier Division side Drogheda United.

After the January transfer window had shut, it was revealed that Omotoyossi had declined a move to Dutch Eredivisie side, FC Groningen,[5] in a deal that would have been worth $2.5 million.

[7] He had a short stint at the Arabian club in which he appeared in nine games, scoring four goals in the 2008–09 season as Al-Nassr finished 5th in the Saudi Professional League.

He scored twice in 8 starts and 14 as a substitute player as Metz finished fourth in the 2009–10 season, just missing out on promotion to Ligue 1.

[8] On 21 July 2011, Omotoyossi signed a short-term contract with Syrianska FC where he only played 5 matches before leaving to Egypt's Zamalek SC.

[11] He played in the 2008 Africa Cup of Nations, scoring one goal in qualification - in the 4–1 home win over Togo on 19 June 2007 as Benin finished second in Group 9 to qualify for the finals in Ghana.

He scored eight goals in eight matches in 2008 for the national team, making him joint top scorer in the African World Cup/Nations Cup qualifiers with Samuel Eto'o.