Bernie Ecclestone has admitted that Spain is unlikely to continue to host two Grands Prix per season.
Currently, the Spanish Grand Prix is held at Barcelona, while the European Grand Prix is a newer and often-criticised street event in the port city Valencia.
A journalist asked whether, after a Rome race was ruled out because Italy already has a Grand Prix at Monza, Spain will also be limited to one event per year.
"Yes, that is a problem we are facing," F1 chief executive Ecclestone said in an interview with La Repubblica.
As for rumours that CVC is looking to sell a part of the sport's commercial rights, the 80-year-old Briton was less forthcoming.
"I don't know, I'm just an employee!" he joked.
"As far as I know everyone is happy and not thinking about selling," he added.
Meanwhile, Ecclestone said that if he was forced to bet some money on the outcome of the 2011 world championship, he would back Alonso.
Asked if his answer was merely to appease the Italian newspaper's readership, he insisted: "No, no. When I talk about money I'm always very serious."