The 31-year-old former PSV Eindhoven and AC Milan midfielder, a free agent after being released by Real Betis last December, agreed terms with Rovers earlier this week after a successful trial period.
"It was an opportunity too good to miss," Hughes said. "Even though he´s missed six or seven months, has looked sharp and could be a good option for us between now and the end of the season. That´s why we have done the deal."
Copyright (c) PA Sport 2008, All Rights Reserved.