Dr Helmut Marko on Thursday dealt a blow to the persistent rumours about Sebastian Vettel's future.
German reports recently added fuel to the fire by acknowledging that while the reigning back-to-back world champion has a Red Bull contract for 2014, it contains some 'get out' clauses.
Red Bull's Marko told Sport Bild: "I have to disappoint Ferrari and all the others.
"Sebastian has a bullet-proof contract with us through 2014. There are and there have never been any options or opt-outs," the team's driver manager insisted.