US investment fund Ripplewood is ready to make a bid for Opel, bringing the number of potential investors to three, German daily Bild reported on Tuesday.

Bild did not cite a source in its report, news agency AFP said, adding that New York-based private equity fund Ripplewood already controls German components maker Honsel.

The other two interested parties are Fiat and Magna, linked to Russian automaker GAZ.

The German government has asked investors to submit bids by Wednesday.