Jul.1 (GMM/Inautonews.com) Just two days before his engine would fire, Fabio Leimer still does not know if he will drive at Silverstone.

After his hopes of making his Friday practice debut for Manor were dashed in Austria, the Swiss told France’s L’Equipe: “For now, it seems that I will do the first free practice at Silverstone.”

But as of early Wednesday, the British backmarker is yet to confirm that, and 2013 GP2 champion Leimer’s management told Blick newspaper at Silverstone: “We still do not know for sure.”