Born in Nakuru, Kenya, Osano moved to England aged nine when his father joined the British Army. However, he didn't start playing football until the age of 13, as a student at Oak Farm School in Farnborough.
Osano was born in Nakuru, Kenya, and moved to England at age nine with his father who joined the British Army. Nevertheless, he did not start playing football until the age of 13 while studying at Oak Farm School in Farnborough.