Seny Dieng, a Senegalese international goalkeeper, was sold by Queens Park Rangers to Middlesbrough in the summer of 2023 for a fee believed to be in the region of £2 million. Dieng signed a four-year contract at the Riverside Stadium, but his stock and reputation have rapidly declined over the past three seasons. He has now departed Middlesbrough by mutual consent, allowing him to move to Greek side Atromitos on a free transfer.