Championship side Bolton Wanderers have signed left-back Jose Manuel Casado on a one-year deal.
The 29-year-old left Almeria this summer following their relegation from the top division in Spain.
Casado spent time in the Barcelona academy but only featured for their third team, and has also played for Sevilla, Rayo Vallecano and Malaga.
He could make his debut for Wanderers, who are currently winless this season, against Blackburn on Friday.
Boss Neil Lennon said: "He's a very good player who I became aware of at Celtic. He had a bad injury but is over it now and will help strengthen the squad."
Find all the latest football transfers on our dedicated page.