Charlton chief executive Peter Varney said the club will rebuff any approach from London rivals Tottenham for manager Alan Curbishley.
Curbishley has been at Charlton for over 12 years
Curbishley, the top-flight's second-longest serving boss behind Sir Alex
Ferguson, has hinted that he would be keen to take over at White Hart Lane.
But Varney said: "We would tell them 'no thanks' if they made an approach.
"He is deeply rooted in Charlton, and it is going to take something special to shift him.
"He is very happy here and the focal point of our club; people struggle to know who the Charlton board chairman is, and that is the kind of club we are.
"Others remain in the background while he runs the football side from top to bottom. He is proud of what he has built here, and there is a lot more to be achieved.
"He has built a club as well as a football team, and that can't be said of many other people in the history of the English game.
"He has got the full backing of the board and has a long contract to show for it. We have backed him and would expect to retain his loyalty."
However, Curbishley has admitted he fears becoming "stale" if he remains Charlton boss any longer, heightening speculation he could succeed Glenn Hoddle as Spurs boss.
The list of candidates for the White Hart Lane vacancy appears to be narrowing after Celtic boss Martin O'Neill attempted to quash speculation linking him with the job.
And Curbishley admitted any offer from Tottenham would be tempting.
"I've got to be offered it first," he said. "Right now I'm going nowhere. I've two-and-a-half years on my contract and I'm happy at Charlton, but it's flattering to be linked to Tottenham.
"At the moment I'm quite comfortable, maybe too comfortable, unambitious and everything else. And I only live two miles from their training ground."
O'Neill was linked with the White Hart Lane position within hours of Hoddle's sacking.
However, the Northern Irishman signed a rolling contract last season and insists he is happy to stay with the Glasgow giants.
"Four months into the job my future was under scrutiny and has remained so," he said.
"But after three years and three or four months I am still here battling away and battling my hardest to keep this job.
"It is difficult at the best of times and almost impossible at the worst times so on I will go."
Rangers boss Alex McLeish ruled himself out of contention by signing a new four-year deal.
But former Chelsea and Watford boss Gianluca Vialli declared his interest in the job.
Klaus Toppmoller, who led Leverkusen to the Champions League final in 2002, and former Barcelona coach Raddy Antic have also been touted as potential candidates.
Blackburn boss Graeme Souness, however, insists he will not leave Ewood Park.
"I'm very, very happy in my job," said Souness. "It is one of the best there is and I'm very, very happy with the players I work with."