The Nigerian striker, 31, had his loan from Shanghai Shenhua extended until January 2021.
"That energy, that positivity, that happiness, never change," he said. "You can see that smile on my face every time I go in there.
"It's not every man's dream that comes to pass, well mine did. My kids will grow up and see that I played for a team that I supported from when I was young, I cried when they lose and all of that. I want to keep doing what I need to do until the last day that I play for the club."