Midfielder Gera is set to put pen to paper with Albion when he proves his fitness after undergoing ankle surgery on Thursday.
The Hungarian international will sign a two-year contract with the option of another 12 months at The Hawthorns.
"There was a chance of me staying at Fulham but I had already made a verbal agreement with West Bromwich Albion," Gera told origo.hu.
"After I spoke to Roy Hodgson, the Fulham manager changed. They wanted me to stay but I didn't want to break my agreement (with West Brom).
Gera, who spent four years at the Hawthorns before moving to Craven Cottage in the summer of 2008, denied that Fulham closed the door on him and insists that he could have stayed.
"I'm grateful to Fulham for the years I spent there. I've received only good things from them," he added.
"I felt good and they wanted me to stay. It's not true that they told me to go. It was my own decision. I considered it to be the best thing for me."