Professor Gerard Saillant is refusing to comment on the latest reports about his friend Michael Schumacher.
According to the latest rumours, after being told the former Ferrari and Mercedes driver is unlikely to wake after more than three months in a coma, Schumacher's wife is preparing a medical suite at their Swiss mansion so that he can leave hospital.
Saillant, a leading Paris neurosurgeon and close friend of Schumacher's who was initially involved his his treatment in Grenoble, is quoted by BFMTV as not wanting to comment.
"I think the people who are talking do not know, and those who know are not talking," he said.
"So I am not going to talk," added Saillant.