Geoff Willis has not left the HRT team yet, a spokeswoman for the Spanish team insisted on Friday.
It has been reported in recent days that Briton Willis - the former Red Bull, Williams and Honda technical chief - was leaving due to not being happy about the plans for the 2012 budget and car.
The reports also said former BMW and Brawn designer Jorg Zander is set to join HRT.
The team’s communciations boss Maria Serrat said on Friday that Willis is officially "still rendering his services to HRT".
It is understood, however, that the 51-year-old will definitely not be leading the 2012 car project.