Ted Kravitz said on the post-race Ted's Notebook on Sky Sports F1 after the 2020 Abu Dhabi GP that it is expected to be announced in the next days that Sérgio Pérez will drive for Red Bull in 2021 as Max Verstappen's teammate and Alex Albon will become the reserve/test driver for the team. The source link directs to a tweet that includes the video from the Sky Sports F1 broadcast

Red Bull Racing confirm on their website and social media that Sérgio Pérez is driving for them in 2021 as Max Verstappen's teammate and Alex Albon becomes test and reserve driver