But Keita has now posted to social media: "Since the first day I signed for this fantastic club, I have always worked selflessly and professionally.
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"My only desire has always been to help the club and bring joy to the many fans, especially at a time when the results are not what we would like them to be.
"Since the beginning of my career, I have never had problems with discipline, regardless of where I have been, and I have always tried to be a role model.
"I will therefore not accept that someone destroys my reputation. To the fans: You must know that I fight every training session so that I can make you happy every weekend."