Rangers chairman Sir David Murray has warned off any potential suitors of Madjid Bougherra.
The Algerian defender has been strongly linked with a move to France of late, with Bordeaux leading the chase.
The Ligue 1 champions are reported to be preparing a £3million bid for the centre-half, but the Gers insists that will not be enough to force their hand.
Murray admits that were an 'unbelievable' offer to be made the SPL giants would have to reconsider their options, but insists that for now Bougherra is not for sale.
"We don't wish to accept offers for our good young players but if we get something unbelievable we would have to be realistic," Murray said in the Daily Record.
"We have no intention of selling our best talent. We are no different to any other club in that if we receive an offer well above our valuation we will consider it.
"Being honest, it was crucial to win the league. If we had not done so it would've hit us heavily financially."
While Rangers remain defiant regarding Bougherra's future, Bordeaux president Jean-Louis Triaud has hinted that an approach is imminent.
"I spoke to Laurent (Blanc) the other day to get an idea of potential replacements for (Souleymane) Diawara and he gave me a list of four. Madjid Bougherra is on that list," he said.
"We have not made any offer to Rangers yet but if we do we will not be forced into a corner by them. Some of the transfer fees and salaries being asked for in the deals we are doing are astronomical and we won't bow down to them.
"Any discussions we decide to have with Rangers with regards to Bougherra will be quite simple.
"We don't have a lot of money and we're being realistic and sensible in the transfer market. If he's too dear then we move on - nothing lost, nothing gained."