Former Liverpool and Chelsea midfielder Boudewijn Zenden will go on trial at Celtic.
The Dutchman, also formerly of Barcelona, was released by Sunderland at the end of the season.
Now without a club, the ex-Liverpool man has been offered a trial at Celtic.
Celtic assent Alan Thompason said: Bolo came in a couple of days ago and he trained yesterday," Celtic assistant manager Alan Thompson said.
"He's a free agent with an unbelievable CV. He wants to come, so we'll have a look and see what we can do."
The 35-year-old will now train with Celtic in the hope of being handed a deal with the SPL side.
Zenden made 46 appearances for Liverpool during his two-season stay at the club, scoring two goals.
Bar his spell at Liverpool, he also had success with Chelsea and in the north-east with Middlesbrough, and more recently Sunderland.