Ralph Boschung will make his return to Formula 2 in the season finale at Sakhir, replacing Jack Aitken at Campos.
Aitken is set to step up to Formula 1 with Williams, replacing 2019 F2 Champion George Russell, who will in turn replace Lewis Hamilton at Mercedes, following the F1 World Champion's positive Covid-19 test.
The Swiss driver has already been confirmed at Campos for 2021 and has been with the team in Bahrain in preparation for the post-season tests. The 23-year-old has previous experience at this level, driving for the Spanish side in 2017.
Campos are currently ninth in the Teams’ Championship, with Aitken scoring two podiums.
“We are glad to have Ralph with us this weekend as it will give us a nice opportunity to start working together for next year," said Campos Team Principal Adrián Campos. "In such a professional racing environment, it is a golden chance for everybody.
"We expect to have a strong run in Sakhir with our drivers Ralph and Guilherme. We are looking forward to racing on this new layout, which looks exciting.”