Clayton Donaldson was Brentford's top scorer last season with 18 goals and that was enough to impress Birmingham City with whom he has signed a two-year deal.
The frontman rejected the offer of a new contract at the Sky Bet Championship new boys to pen a move to divisional rivals Birmingham, bringing to an end three years at Griffin Park.
With the Bees he scored 53 goals in 155 appearances, having registered 49 in 130 for Crewe Alexandra before that.
The 30-year-old, a key component in Brentford's promotion-winning campaign during 2013/14 and their run to the Play-Off Final in 2012/13, also enjoyed an affluent goalscoring spell at York City, with 42 goals in 91 appearances, proving his status as a clinical striker.
Scottish club Hibernian and current Premier League team Hull City also rank among his former employers.
After making Donaldson his ninth signing of the summer, Birmingham manager Lee Clark told the Birmingham Mail: "I am absolutely delighted. You only have to look at his record over the last four or five seasons.
"He has got power, pace, he's good in the air and he can play out wide. We have beaten off some big clubs in the division."
Donaldson will replace the gap left after the departure of Serbian striker Nikola Zigic.
Experienced midfielder David Cotterrill has joined from Doncaster Rovers, with Clark's other recruits including David Edgar, Gavin Gunning, Wes Thomas, Stephen Gleeson, Grant Hall and Jonathan Grounds.
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