Following a series of loans to other clubs, Omoyinmi joined Oxford United in 2000 for whom he made 67 league appearances, scoring nine goals.
He was unable to gain a regular place in the first team, making only 13 league and cup appearances in five years, of which eleven were as substitute, scoring two goals.
[3] During his loan spell at Gillingham, he played for the club in both legs of their second round Football League Cup tie with Bolton Wanderers.
After returning to West Ham, he appeared as a substitute in a quarter final round of the same competition against Aston Villa.
[7] Immediately following the first match against Aston Villa, Omoyimni went on loan to Scunthorpe United for three months and then to Barnet for the rest of the season.