Defender Danny Simpson has been warned by Newcastle boss Alan Pardew to sign a new contract or face being shown the exit door.
Simpson, who has 18 months to run on his current Newcastle contract, is reportedly holding out for more money but he could find himself being offloaded in the January transfer window if there can be no agreement reached with the club.
"My personal preference is for Danny Simpson is to sign quickly, because he has got a lot of competition in that area," Pardew told the Daily Mirror. "If we can't reach agreement, he'll have to move on - it's as simple as that.
"We have got Davide Santon, who is desperate to play. It will be as dangerous for Danny as it is for us. He's a player who, within 18 months, broke into team and established himself as a first-team player. He feels he should be rewarded with a new contract. I agree with that.
"Really, all we're talking about is the figures and that is very, very difficult at this level. He wants to secure his future and contract negotiations are going on. So there is a situation there and he has not got long left on his contract. There are a couple of other contract situations at clubs going on and that is all part of the process of a big club like ourselves."
Simpson has enjoyed an impressive start to the season with the Magpies, and has attracted interest from a number of clubs, including Aston Villa. However, the 24-year-old is certain his future remains at St James' Park.
"It's not a problem," he said. "I'm happy here and Newcastle want me to stay. Contracts don't get sorted out in a couple of days, I'm sure it will get sorted in time. I'm happy and my family are here.
"It's a great time to be at Newcastle at the moment, the whole city is buzzing and I'm sure our form will carry on for the rest of the season."