Information from @F1insidercom : Vettel and McLaren won't happen.
2 hours ago, Seb declined the offer. McLaren told him that they need at least 3 years to have a winning car.

For Vettel it's either Mercedes or retirement...https://t.co/dU4nUPkfGU

— tami. (@Vetteleclerc) May 13, 2020