"We have invited Milan Rapaic to come and train with us over the next few days," confirmed a spokesman for the Scottish side. "It will give the manager the chance to have a good look at him."
As he is now not under contract the transfer window does not apply and he may sign for any club who he agrees terms with, and he is keen to join either Celtic or Liverpool.
"I am in contact with both Celtic and Liverpool," he said. "I am flying to Britain and I will sign with one of these sides until the end of the season."