"It's what you work for and it's what all the sweat and hard work in the gym is for, to get a chance to play in the best league in the world," the 31-year-old told the club's official website.
"It's fantastic and hopefully I can go on now and try to establish myself in the team here, and do well for West Brom.
"It was a nice experience. It's taken a long time and I have dreamed of it. When you set out, that's what you want to do, to play at the top level.
"It's been tough getting here, but I enjoyed every minute of it. I have seen a lot of good players through international football, and a lot of the difference between the Championship and the Premier League is the speed of thought and the movement of the players."