The Inter Milan man joined the Hammers in the summer on a season-long loan and it has been confirmed that he will stay in England until the end of the current campaign.
Obinna's agent Valentino Nerbini said that some of Inter's Serie A rivals were keen on the Nigerian but said an Upton Park stay was sorted, ruling out any rumours linking him with Birmingham City who are also interested.
"I'm in daily contact with Inter Milan with regards to Obinna," Valentino Nerbini told Tuttomercatoweb.com.
"There has been some activity about the player but as it stands, he wants to remain there unless he receives a tempting offer from Italy.
"He is happy at West Ham so intends to stay there, as agreed, until June 2011. I can rule out Birmingham."