The two clubs are locked in negotiations, with the main sticking point what will happen at the end of the loan deal, with Arsenal keen for an option to buy.
Sahin is keen to join Arsenal and participate in the Champions League.
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Chelsea legend Didier Drogba has revealed his top 11 Chelsea career moments during his recent interview on Chelsea TV.
The start of the 2017-18 Premier League season is just around the corner and is shaping up to be one of the most competitive yet.