Having already seen the Australian Grand Prix pushed back and Imola added to the calendar, Alfa Romeo team manager Beat Zehnder believes more changes are inevitable when it comes to the 2021 Formula 1 calendar.
The 2020 schedule underwent massive changes with 13 events cancelled, while two races were held at some venues and previously unused circuits were added in order to create a 17-race season.
Australia has already been pushed back to November and Imola has once again been added in 2021, and Zehnder believes more changes are inevitable due to the coronavirus pandemic.
"I think we have to go through the season step by step after the start in Bahrain, but I cannot imagine, for example, that the government will let us drive in England with the current situation," Zehnder told Auto Motor und Sport. "As of today we probably won't be able to go to Nurburgring, but the situation is always changing. I think the vaccine will only help us in the second half of the season.
"At the moment I don't think we can run on temporary circuits, even though Monte Carlo has stated that the race will take place."
With Formula 1 scheduling three triple-headers later in the season, Zehnder doesn't see a lot of wiggle room when it comes to rescheduling events.
"The calendar in the second half of the year is already full," Zehnder continued. "We have three triple-headers in a row. First Spa, Zandvoort and Monza, and then Sochi, Singapore and Japan. Then we go to the other side of the world to Austin, Mexico City and Sao Paulo.
"Then back to Melbourne. That's 12 races from the end of august to mid-December. There's no real break in between."