Alan Pardew has conceded defeat in his efforts to bring Andy Carroll back to Newcastle before the summer transfer window slams shut.
The Magpies have already tabled one offer for a man they sold to Liverpool for £35million in January 2011.
Liverpool are unwilling to discuss the current terms on offer, but remain open to the prospect of offloading the England international.
Reds boss Brendan Rodgers will not allow Carroll to leave on loan but a permanent agreement could be reached, and the 23-year-old would favour a return to the North East.
Pardew, though, believes a deal is unlikely.
Asked on Wednesday if the re-signing of Carroll was still a possibility, he replied: "Not as far as I'm aware, no."
Newcastle have been able to bolster their ranks with the signings of Vurnon Anita, Romain Amalfitano and Gael Bigirimana this summer, but a number of top targets have remained agonisingly out of reach.
Pardew remains in the market for possible late deals, but does not anticipate there being a late flurry of transfer activity on Tyneside.
He said: "We are just watching the market and seeing if anything pops its head up that's appealing to us.
"Agents keep ringing me and giving me all sorts of names - they must think we don't scout - but we are aware of the ones we are watching and if they decide to move on, then we might trigger ourselves.
"But at the moment, the targets we have are all very much secure at their clubs."