Hatem Ben Arfa sustained an injury to his left ankle in a tackle during the club's friendly against Sporting Kansas on Wednesday evening and went to a local hospital for a precautionary x-ray.
Consequently he will be leaving the club's US tour tomorrow and the injury will be reassessed over the next 48 hours.
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Tickets for Newcastle United's friendly against Real Sociedad are on general sale from £15 for adults & £5 for children.
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