Turkey's state-run agency says authorities have agreed “in principle” for Istanbul to return to the Formula One calendar in 2013.

Anadolu Agency quotes businessman Vural Ak - who has taken over the management of the Istanbul Park circuit - as saying that an agreement had been reached with Formula One boss Bernie Ecclestone.

Ak said, however, a final decision would rest with the Turkish government.

Turkey joined the F1 calendar in 2005, but was dropped in 2012 following a disagreement with Ecclestone over the fee to stage the race.

Turkish media say Istanbul is likely to fill the July 21 spot that was left vacant on the calendar after the removal of the Grand Prix of America.

Istanbul Park's challenging circuit was popular with many of the drivers. - Sapa -AP