Charles Leclerc admits it was “difficult” to keep F1’s worst kept secret in the second half of the 2017 season.

Most F1 insiders suspected the Monaco-born 20-year-old would make his debut in 2018, and it was finally made public along with Sauber’s Alfa Romeo deal a few days ago.

Asked how hard it was to keep it all secret, Leclerc admitted to Blick newspaper: “It was pretty difficult!

“Of course, I heard all of the rumours too, but it was also stressful because nothing was official.

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