Toro Rosso boss Franz Tost believes Daniil Kvyat has his mental strength back following a difficult period after his demotion from Red Bull.
Kvyat started 2016 racing for Red Bull but was moved across to Toro Rosso prior to the Spanish Grand Prix, in which he came 10th.
Kvyat collided with Renault's Kevin Magnussen in Monaco and was deemed responsible, meaning he will drop three place on the grid this weekend in Canada.
However, following a challenging spell for the youngster, Tost is sure Kvyat is now ready to prove his worth.
"Of course it was a shock for him as Red Bull Racing are one of the leading teams in the pit lane – and coming back to Toro Rosso, who are clearly a midfield team, was not easy to digest," he told the official F1 website.
"At the beginning he was not in the best condition as you can imagine, but we had meetings together, had dinner a couple of times, and I think he has his mental strength back.
"In one or two races he has overcome all that, and is focused on his new job – just at his old team. Obstacles are there to overcome and he will do that. I believe that the period to bring him up again to where he was is quite short."
Despite Toro Rosso historically rarely fielding a drive for a third season, Tost says it is entirely realistic for Kvyat and Carlos Sainz Jr. to remain with the team in 2017.
"To change a driver there must be another driver who can take his place," he said.
"And this is a decision that will be made by Red Bull at the end of the season.
"Secondly: it isn't written anywhere that Toro Rosso always has to follow that two year principle – that neither Carlos nor Daniil will be driving for us next season."