Midfielder Emmanuel Ledesma has left Brentford and signed for Greek side Panetolikos.
The 28-year-old, who spent a spell on loan at QPR in 2008-09, joined the Bees on non-contract basis earlier this month after a trial.
He made two appearances, as a substitute at his former club Rotherham, and in the EFL Cup match at Exeter.
Ledesma played under Brentford head coach Dean Smith at Walsall, and also had spells with Middlesbrough and Brighton.