Anderlecht understand that Chelsea still want Romelu Lukaku despite the change of manager at Stamford Bridge but have told the Blues to make a decent offer.
The 18-year-old striker, who has already been capped at senior international level by Belgium and is regarded as an extremely bright prospect for the future, looked set to join Chelsea earlier in the summer.
A deal did not materialise as quickly as expected and some reports have claimed that new boss Andre Villas-Boas is less keen to bring in the teenager.
Anderlecht insist Villas-Boas is a fan of Lukaku but are determined to get a fair price and are thought to value their prize asset at around £20million.
Director of football Herman van Holsbeeck said: "People say the new Chelsea manager doesn't want Lukaku - but they have different information to me.
"But we will only sell him if it is good for both ourselves and the player.
"We want serious money for him."
Anderlecht president Roger Vanden Stock maintains that Chelsea have not yet made a formal offer and may have to wait until next summer unless they step up their interest.
"Lukaku says Chelsea are the club for him, so they will probably be the club he joins," said Vanden Stock.
"But they have not yet put their money on the table. They want him for as little as possible.
"We'll see what happens. He will go to England in the end, but it is fine if he stays another year with us."