The attacking midfielder has been heavily linked with a move to the Bundesliga side, but his current club have received no formal bid as of yet
Reports from Denmark earlier this week suggested that BVB had tabled a bid in the region of €12 million for the attacking midfielder, but Ajax have made it clear they still await a formal approach from the Champions League finalists.
"The Danish press publishes all kinds of stories, but Dortmund have not made a formal offer for Eriksen," Overmars told Algemeen Dagblad.
The 21-year-old has a contract with Ajax until June 2014, but the Amsterdam giants are ready to cash in on the midfielder this summer if a good offer comes in.
Aside from Dortmund, Eriksen has also caught the attention of Premier League sides such as Tottenham and Liverpool.