Lukaku signed for Everton last week on a season-long loan.
"Different clubs called me and I had to take the right decision. Roberto Martinez called me for 30 minutes and explained me what he expects from me.
"I decided that Everton was the best choice. They are a more prominent club than West Brom where I had a good time. The important thing, at 20, is to be playing, and while West Brom was an option, Everton was a better one.
"I've also known Kevin Mirallas since I was 14, and that should help. We talked about [the loan move] and I am looking forward to playing."
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