Claudio Yacob has signed for Nottingham Forest for the next two years.
The Argentine central midfielder has signed a contract until 2020.
The 31-year-old was a free agent, having left West Bromwich Albion last season.
He had spent the past six seasons with Albion.
He will be hoping to push Forest up the Championship, where they are currently 14th.
Forest have played six games, winning one, drawing four and losing to Brentford 2-1.