BERLIN (Reuters) - Volkswagen new Chief Executive Herbert Diess will likely take the helm of luxury division Audi's (>> Audi AG) supervisory board next month, sources at VW group said.

Diess, who has been head of Volkswagen's (VW) core autos brand since 2015, replaced Matthias Mueller as CEO of VW group on Thursday after key stakeholders at Europe's biggest automaker decided that sweeping changes at the multi-brand conglomerate should be spearheaded by a fresh CEO.

Diess, a former executive at Audi's luxury rival BMW (>> Bayerische Motoren Werke), is expected to replace Mueller as chair of Audi's 20-strong supervisory board at a meeting on May 8, one day before the brand's annual general meeting, the sources said.

"The supervisory board will take a decision on the chair at its next meeting," a spokesman for Audi said, without elaborating. VW didn't return calls seeking comment.

German magazine Automobilwoche reported earlier on Saturday that Diess wants to become chairman of Audi, without citing the source of the information.

The supervisory board of Audi, the biggest profit engine at VW group, has traditionally been led by the VW group CEO.

(Reporting by Andreas Cremer; Editing by Peter Graff)