The 24-year-old only joined the Potters in the summer of 2012 from relegated Blackburn in a £3 million deal but is already looking to move on.
Coates remains adamant that the Frenchman, who featured heavily in a season that saw the club flirt with relegation before finishing 13th in the Premier League, will remain at the Britannia Stadium, however.
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"We are not unduly worried about the situation as he is our player and has three years remaining on his contract."
Stoke parted company with manager Tony Pulis on Tuesday after a dismal record in 2013 saw the side sucked into a relegation battle.