Fabricio Coloccini's agent has stated that the Deportivo La Coruna defender may cancel his contract with the club and walk out to join Newcastle United unless a deal can be done.
Marcelo Lombilla has been infuriated by the Galician club's stance over a bid from the Premier League outfit after they raised their asking price once an offer had been made.
According to the Argentinian's representative, Depor wanted 12million euros (£9.5m) and he informed Newcastle, who then lodged a bid of that amount only for the valuation to rise to 14million euros (£11m).
"(Depor president Augusto) Lendoiro needs to come and say what he means. One day he says a million will be enough, but you know that means a million and a half, for sure," Lombilla told AS.
"For Coloccini it is awful that he may miss out on the contract of his life."
If no deal can be reached in the next few days, then Lombilla believes that the player will be left with no choice but to invoke Article 17 of Fifa's regulations and walk out.
"We do not want to do that, but they are pushing us very close to the edge," the agent added.
Coloccini has been left out of the club's trip to Venezuela in order to stay behind and negotiate his next move and a deal could now be sealed this week.
Coach Miguel Angel Lotina was said to be unhappy that the defender could leave, but has received assurances that he will be able to spend the fee on new players.
"There are various players that we could look at, but the ones we like most do not play in Spain," said Lotina. "We have a few ideas, but we will have to wait and see if Coloccini's move is confirmed or not first."