Anderlecht chiefs insist Chelsea are yet to make formal contact for Romelu Lukaku.

The teenage sensation has been likened to Didier Drogba and is a top target for Chelsea football chief Frank Arnesen.

"We know there are several clubs interested, but there is no concrete offer has come for the boy," said Anderlecht chief Herman Van Holsbeeck.

Lukaku, a self-confessed Chelsea fan, is tied to Anderlecht until 2012.