Jagiellonia Bialystok have told Celtic to up their offer for in-demand Grzegorz Sandomierski if they want to land the goalkeeper.
The Bhoys are currently vying with Belgian side Genk for the 21-year-old, although the offers from both clubs do not match Jagiellonia's valuation.
Club president Cezary Kulesza has confirmed the clubs are in talks for the shot-stopper, however, both are also currently in the same boat.
Jagiellonia say the offers on the table are not good enough, but they are willing to meet interested parties halfway in order to strike a deal.
"I have to admit, we are talking to two clubs about him," confirmed Kulesza.
"The Scots and the Belgians have made offers and they are both the same.
"There is nothing confirmed with Celtic and we haven't sorted the money issue.
"When this is done, or if it will be done, we'll be there halfway.
"But we're only talking at the moment and Genk are also in this same situation."