Paul Hartley has a lucrative contract offer on the table with Iraklis of Salonika as the expiry of his Celtic contract looms.

"We went out to have a look around and Paul was impressed with what he saw," said the 32-year-old's agent Mark Donaghy.

"It's definitely a serious option for him. Iraklis are a club looking to move forward. They have a new president and coach and are looking to build up the club.

"They certainly couldn't have done any more for Paul and it's now a case of going back to think about things and to decide what he wants to do."

New Celtic manager Tony Mowbray could yet offer Hartley a new deal while there is also talk of interest from Sheffield United and Hearts.