Formula One said Turkish GP organisers had asked the sport to consider holding the race later in the season, should that be possible.
Seven-time world champion Lewis Hamilton will be staying in Formula One for the next two years at least after he and Mercedes announced a contract extension on Saturday.
Stefano Domenicali resigned as Ferrari's Formula One team principal on Monday, and the company's North America president and chief executive Marco Mattiacci was appointed as his replacement.
The Brazilian said he would never forget the team's support for him after his near-fatal head injury at the 2009 Hungarian Grand Prix.
There has long been speculation about whether Audi might be tempted into Formula One.
'But I think because he's such an enthusiast, this is just what he needs. And what Ferrari needs'
Kimi Raikkonen has plenty of supporters among the passionate Ferrari 'tifosi' as the team's first champion of the post-Schumacher era, and last to date, and his return would a break with Ferrari tradition as much as a blast from the past.
Brazilian Felipe Massa announced on Tuesday he is leaving Ferrari at the end of the season, opening the door for Kimi Raikkonen to return to the Formula One team that took him to the title in 2007.
Briton Lewis Hamilton stormed to pole position at the German Grand Prix on a mixed Saturday for Mercedes, whose misjudgement left last week's Silverstone winner Nico Rosberg 11th on the grid for their home race.
Summary of sports events and persons who made news on Tuesday