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Pascal Wehrlein has criticised reports suggesting he has definitely signed with Sauber for the 2017 Formula 1 World Championship season.

The Manor Racing driver has emerged as a candidate to replace Felipe Nasr in the team after it emerged the Brazilian would no longer be backed by his Banco do Brasil sponsors.

With Wehrlein acknowledging Sauber was a potential option for 2017 when speaking to the media on Thursday, reports in the German press today suggested a deal has now definitely been signed.

However, Wehrlein slammed the reports as untrue, saying talks are ongoing between Sauber and Manor but reiterating that nothing has been signed.

"It's not true," he said. "No, there's no news. There's still talks and discussions going on and of course with both teams because they are the only teams with a seat left for next year.

"Many people asked me today about if it's true that I signed and no, it's not true. It's not good that people write something like that when it's not true. If it would be true we would confirm that."

It is a line echoed by Mercedes F1 boss Toto Wolff - who manages Wehrlein's career -, who said nothing has been decided as yet.

"We are in discussion with Monisha and in discussion with Stephen and his management group and nothing is decided yet. That's where we are."