The striker was initially a fan favourite at West Brom after joining the club in 2010, but the relationship turned sour over the second half of last season.
"I played against West Brom at Cardiff, but this will be my first time back at The Hawthorns.
"It's going to be a mixed reception after my last six months there and I'm not expecting anything different.
"Some fans are grateful for the 30 goals I scored for them and some still feel offended, but it was a choice I had to make.
"I had to move on for my life. Some people understand, some don't. You can't please everybody."
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