That is the view of Schumacher's former race engineer, and ex Ferrari academy chief Luca Baldisserri.
Vettel has fallen short to Lewis Hamilton in title battles the past two years, and is not even a factor in the 2019 race, sitting 100 points behind the Mercedes man at this season's halfway point.
Poor strategy, a struggle to optimise the SF90 and continued mistakes from Vettel have made for a potent mix this year, prompting question marks to be raised over the German's future in the team and F1 as a whole.
Despite explaining his frustrations with modern F1 after having a victory in Canada taken from him by the stewards, prompting rumours of a potential retirement, Vettel says he will at least see out his Ferrari deal which runs to the end of next year.
"When Leclerc becomes a more mature and experienced rider, he will need a team mate who can help and support.
"I believe that Vettel has the necessary experience to become an excellent partner for Leclerc."
Vettel still leads Leclerc in the drivers' standings, albeit by just one place and three points after a British grand Prix which saw the German throw away a potential podium finish by crashing into Max Verstappen.
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