Pascal Wehrlein has delivered "exceptional" performances on track and deserves a place in Formula 1, according to Mercedes team boss Toto Wolff.
The Mercedes protege is unlikely to be on the F1 grid next year after losing his Sauber seat to Formula 2 champion Charles Leclerc while Sergey Sirotkin is set to get the last remaining drive at Williams.
Mercedes is currently assessing the alternative racing programmes available to Wehrlein for 2018.
"Pascal is in a difficult position because there is not really an open spot for next year if Williams door closes," Wolff told Motorsport.com.
'He deserves to be in Formula 1, he is a very good driver.
"On track his performance was exceptional, and for many other reasons that go much beyond the driving the doors haven't opened like we would have hoped.
"But I think he has the potential of being a successful Formula 1 driver."
Despite the difficulties in finding Wehrlein a seat, Wolff said he is happy with the performance of the Mercedes' junior programme, which also features Esteban Ocon and George Russell.
"Our target is to identify the next Lewis Hamilton and that is not an easy task because he's just on an incredible level," said Wolff.
"I think the decision that we have taken is that we want very fast and experienced drivers in the car, being at Mercedes is not the place where you learn, you need to be pretty complete when you join us.
"I mean so far I am happy with the programme, how it is going and who knows maybe in two or three years we will have the next junior driver in a Mercedes who has made his way up from Formula 4, Formula Renault like George or Esteban did.
"Esteban has a seat in Force India and is somebody that is a hot asset in F1 as many teams have expressed interest," said Wolff.
"George is just at the beginning of his F1 journey, he has achieved our joint goal which is to win the GP3 championship.
"Now let's see how he goes in Formula 2 next year. His testing [with Force India] was very good but it is very early as he needs to earn the right to be in a Formula 1 car and this is when the serious business starts."