The Argentine spent last season with rivals Olympiacos after work permit problems prevented him playing for the Reds.
Leto signed for Liverpool in August 2007 after Rafa Benitez beat the likes of Real Betis and River Plate to his signature.
The 22-year-old made his competitive debut in a Champions League qualifier against Toulouse on August 28, 2007 - one of four senior games.
Leto signed for Liverpool in August 2007 after Rafa Benitez beat the likes of Real Betis and River Plate to his signature.
The 22-year-old made his competitive debut in a Champions League qualifier against Toulouse on August 28, 2007 - one of four senior games.
