Al Nassr move in doubt for Chelsea's Ziyech after medical

Hakim Ziyech has been one of the players pegged for a move to Saudi Arabia this summer. He would join three of his Chelsea teammates who have already agreed deals with various clubs - N'Golo Kante (Al-Ittihad), Kalidou Koulibaly (Al-Hilal) and Edouard Mendy (Al-Ahli).
However, his move has been thrown into doubt, according to reports, after his medical test with the club. 'Footmercato' report that the tests highlighted knee issues, which could put his move to join Cristiano Ronaldo's team in danger.
It was the same issue that was identified in January, when he underwent medicals for a loan move to PSG. Additional tests were required, and Ziyech lost out on the move as it came down to the final moments of the deadline, due to a Chelsea administrative mistake.
The Moroccan international has struggled to get minutes for the Blues, despite an impressive performance at the Qatar World Cup. If his move was successful, it would bag Chelsea a €15 million fee, and the player himself would be on a salary of €12/13 million-per-season.