Haas boss Guenther Steiner said the team is wary of drivers with a "sell-by date" when picking the team's F1 line-up for 2021.
Haas drivers Kevin Magnussen and Romain Grosjean have been teammates since 2017 but as of yet neither has been re-signed for next season. Haas has plenty of options, with Mexico's Sergio Perez a free agent after Racing Point decided to replace him with Sebastian Vettel next season, while the likes of Nico Hulkenberg and Antonio Giovinazzi also likely to be available.
Ferrari, Haas' engine supplier, also has academy prospects Mick Schumacher, Callum Illot and Robert Shwartzman impressing in F1 feeder series Formula 2, leading to speculation Haas could pair an experienced driver alongside a rookie.