Frederic Vasseur was Lewis Hamiltons team boss when the Briton became GP2 champion in 2006, the year before he entered F1
Canadian Grand Prix
Venue: Circuit Gilles Villeneuve, Montreal Dates: 13-15 June Race start: 19:00 BST on Sunday
Coverage: Live commentary of first practice, third practice and qualifying on BBC Radio 5 Sports Extra 2, with FP2 on Sports Extra. Race is on BBC Radio 5 Live; live text updates on BBC Sport website and app
Lewis Hamilton says that Ferrari team principal Frederic Vasseur "is the person to take us to the top" amid the teams struggles at the start of this season.
Ferrari have scored just three podium places in grands prix this year through Charles Leclerc, while Hamilton won the sprint race in China.
The Briton, 40, finished sixth at the Spanish Grand Prix two weeks ago and afterwards said he had "no idea why it was so bad" and that it was his "worst race (for Ferrari), balance-wise."
Speaking in Montreal on Thursday before this weekends Canadian Grand Prix, Hamilton said: "I love working with Fred. Freds the main reason Im in this team and got the opportunity to be here, which Im forever grateful for.
"Were in this together. Were working hard in the background. Things arent perfect but I am here to work with the team but also with Fred.
"I want Fred here. I believe he is the person to take us to the top."
The seven-time champion described reports in two Italian newspapers that Ferrari were considering replacing Vasseur as "nonsense".
Ferrari said they were not worth commenting on.
"Most people dont know whats going on in the background," Hamilton said. "Thats not part of the discussion."
He added: "I dont think thats on the cards as far as Im aware and its certainly not something I would be supportive of.
"Embedding new people, whether its a driver or engineers or people who run an organisation, it takes time to adjust and the impact can be significant. That is not part of the discussion. I am here to win with Fred and he has my full support.
"I have just started with Ferrari and I am here for several years. There is no question where my head is at and what I am working towards achieving with this team. There are zero doubts."
Vasseur joined Ferrari at the beginning of 2023 after chairman John Elkann removed his predecessor Mattia Binotto following a 2022 season that had started well but took a turn for the worse amid poor reliability, operational errors and lack of development compared with Red Bull.
Last year, Ferrari came close to winning the constructors title for the first time since 2008, ending the year just 16 points behind McLaren, and were expecting this season to be a close fight at the front.
Instead, McLaren drivers Oscar Piastri and Lando Norris have won seven of the first nine races, and Red Bulls Max Verstappen is the only other driver to visit the top step of the podium with wins in Japan and Imola.
Hamilton has struggled in his first races with the team, and has generally been a little behind Leclerc.
He is one place and 23 points behind the Monegasque in the drivers championship.
Hamilton said: "Its been a whirlwind of a year. Everything outside the race track is going amazing, and I am working as hard as I can to make sure thats reflected in the results.
"We need to bring more performance to the car. We have had one upgrade in Bahrain. Hopefully soon we will have another.
"The car I am racing right now is not a car I have had input into developing and evolving over the past four years. I am driving a car Charles has been part of developing. It has its challenges but I am enjoying that challenge."
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