Nyck de Vries is preparing for a possible second outing with Williams at Singapore, depending on whether regular driver Alex Albon is fit to race.
Albon was treated for appendicitis during the Italian Grand Prix weekend, but suffered respiratory failure following his surgery which further complicated his recovery.
The Thai-British driver released a statement claiming to feel "pretty good," but admitted that it might be "tough" to be ready in time for the Singapore Grand Prix.
RacingNews365 understands that De Vries will travel to Williams' headquarters in Oxfordshire, UK this week to have a seat fitting, so the team can have him on standby should Albon not be deemed fit enough to take part in the weekend.
It's been a busy last few days for the Dutchman, who after his brilliant debut in Monza has now been in talks for drives with Williams, Alpine and AlphaTauri for 2023.
He will be testing at the Hungaroring this week for Alpine, where he will take the wheel of the A521.