West Ham United winger Pablo Barrera has joined Spanish club Real Zaragoza on a season-long loan.
The 24-year-old, who played against Aldershot on Wednesday, could make his debut for the La Liga side against Real Madrid on Sunday.
A statement on the Hammers website said Mexico international Barrera, who joined for £4m in July 2010, had struggled to adapt to life in London.
Language difficulties and personal reasons were behind his move, it added.
Barrera made 21 appearances for West Ham last season.