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Hiddink has been Turkey coach since 1 August, 2010

The Turkish Football Federation has accepted that Guus Hiddink is likely to leave his job as national team boss and return to Chelsea.

According to a senior source at the TFF, the Dutchman "can't say no to Chelsea, we believe he wants to leave".

Hiddink, 64, led Chelsea to an FA Cup victory as caretaker manager in 2009.

Despite an indifferent qualifying campaign, Turkey remain in contention for a Euro 2012 play-off place after a 1-1 draw against Belgium on Friday.

But Hiddink is unhappy that the man who brought him to Istanbul, TFF chief Mahmut Ozgener, is likely to be replaced following presidential elections on 28 June.

HIDDINK'S CLUB HONOURS PSV Eindhoven: Champions League (1988), six Eredivisie championships (1986-89, 2002/03 & 04-06), four Dutch Cups (1988-90 & 2005)

Real Madrid: Intercontinental Cup (1998)

Chelsea: FA Cup (2009)

"If Ozgener was staying, Guus would probably stay, too," said the source. "Ozgener has gone on holiday and hasn't decided if he will stand for re-election. Even if does, he's likely to lose.

"Hiddink says he has a contract but these promises don't have value. Chelsea is too good an offer to turn down and the TFF understands this.

"Hiddink feels he still has a job to do there [Chelsea}. He wants to work every day and win championships, maybe the Champions League.

"We will understand that he has coached his last Turkey game as long as Chelsea pay the compensation."

The TFF is yet to receive a formal approach from Chelsea asking for permission to talk to Hiddink but expect one this week.

However, the TFF says any potential negotiations will have to wait until next week as both Ozgener and Hiddink have gone on holiday.

"There is nothing official happening because both parties are away," said TFF spokesman Turker Tozar. "Nothing can happen at the moment and Mr Hiddink has a contract until 2012."

With just over a year left on a 3.7m euro contract that runs until the end of the 2012 Euros, releasing Hiddink could cost Chelsea around 4m euros.

Hiddink, who has also had spells as manager of the Netherlands, South Korea, Australia and Russia, won the FA Cup with the Blues during a three-month stint at Stamford Bridge at the end of the 2008-09 season.

He enjoys a close relationship with Chelsea owner Roman Abramovich, who bankrolled his spell as Russia manager and has used him as a footballing consultant.

Turkey's next Euro 2012 qualifier is against Kazakhstan on 2 September but Hiddink refused to confirm he would still be in charge for the Group A game when asked following the draw in Belgium.