George Russell has confirmed he will remain with Williams for the 2021 F1 season, with Valtteri Bottas expected to imminently sign a new deal at Mercedes.
That pretty much confirms Bottas is staying at Mercedes with Hamilton unless something goes awry
So that leaves
I get the feeling Grosjean and Raikkonen will make way for Ferrari juniors although Stroll / Perez have been mentioned as replacements
Racing Point - if you believe the rumour mill about Vettel wanting the drive now
Red Bull and Alpha Tauri - the one who should be concerned is Kyvat because if he does not get promotion then what for his career ?