Matt Polster appeared in 82 games for the Fire over four seasons.
United States defender Matt Polster has joined Scottish club Rangers from the Chicago Fire.
The 25-year-old Polster has signed a two-and-a-half-year deal with the Glasgow club, which is managed by former England captain Steven Gerrard.
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"This is something that I've always dreamed about doing," Polster said, via the club's official site.
"As a little boy, a lot of people would know that I wanted to play in Europe, before even going to MLS. To finally do it, for this kind of club has left me feeling...