Yet despite Grau's comments, Spanish football expert Guillem Balague remains doubtful that Barça will actually submit a bid for the Brazilian in January.
"We are ready for buying Coutinho in the winter market or any player the technical staff requests", he said.
They rejected three bids - the last of which was £114m - and would make it clear to Barcelona they would not welcome any more interest that could prove unsettling for the 25-year-old.
Barcelona appear to be on a PR crusade this week to show the world they're in really good financial health and have been run very well financially over the past couple of years of so.
Negative consequences if US Prez quits Iran deal
The metaphor is a clear warning and a conditional declaration of war against the USA , similar to how Iran is in a war with Daesh. Trump should not provide North Korea any impetus to reject talks offer, citing U.S. unilateral move to get the better of Iran.
Liverpool, however, strongly denied this version of events and insisted that their definitive stance that Coutinho would end the summer transfer window at Anfield had never changed.
One player expected to leave in the New Year is Andre Gomes; the Portugal global was set to join Tottenham on transfer deadline day and Sportsmail understands that move will be resurrected in January. The club will be sustainable, we don't want losses.
Catalan media outlet El Mundo Deportivo claims that Liverpool might be ready to cash in on Philippe Coutinho in January. We will study it if it necessary. If this is the case [If Barcelona sign players in January] we have to generate income and maybe someone have to leave.
Meanwhile, the Barcelona CEO has once again played down the concerns of the fans over Messi's long-term future at the club.