Leeds United have terminated the contract of American striker Mike Grella by mutual consent.
The 24-year-old joined Brentford on an emergency loan last Friday and, having played two games for the League One club, he is now free to move on a permanent basis.
Grella initially linked up with the Whites on trial and landed an 18-month deal after impressing with Leeds then offering a three-year contract in August 2009 after he continued to progress.
The striker, who undertook loan spells with Carlisle and Swindon during his time with Leeds, made just two appearances last season.
Since joining Leeds in January 2009 the striker made 42 appearances, 33 of which came from the substitutes' bench.
Grella scored a total of five goals for the club, including two in Leeds' 5-2 FA Cup second round win against Kettering Town which ultimately secured a third round tie against Manchester United at Old Trafford.