Skysports.com can confirm Celtic have taken Estonian international Sander Puri on trial.
The 21-year-old is out of contract with Levadia Tallinn and he has been offered the chance to win a move to Celtic.
Puri, who has attracted interest from a number of other clubs, will spend the next week training with Tony Mowbray's troops.
The player's agent, Babak Afshar, has confirmed Puri has been invited for a trial at Celtic and that the winger would be interested in a move to Parkhead.
"Sander is at Celtic for one week," Afshar told skysports.com.
"He is out of contract and he would only cost a compensation fee.
"There are several clubs interested in Sander, but of course he would be interested in joining Celtic.
"It is too early to say if he will join Celtic and we will see what happens."