The Super Eagles forward is expected to train with Barca's first team towards the end of his loan deal.
A Barca statement on Tuesday said,
"FC Barcelona and Enyimba Football Club have reached an agreement for the transfer until the end of season of the player Ezekiel Joseph Bassey for Barça B.
"The agreement includes a purchase option for two more seasons. The 20- year-old Nigerian striker will undergo medical examination in the next few hours."