Chelsea boss Andre Villas-Boas may seek to block Jose Bosingwa's sale.
The Sun says Turkish giants Besiktas are willing to offer Bosingwa big money to move to Istanbul.
Bosingwa, 28, could link up with FIVE other Portuguese players in the Turkish capital, including Manchester United winger Bebe, who recently arrived on loan.
Right-back Bosingwa has only one year left on his contract.
He joined Chelsea for £16million in 2008 from Villas-Boas' old club Porto.
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