The rules on the Swiss government’s website state that isolation after a positive COVID-19 test “Normally lasts 10 days“.
The Swiss FA are planning to have a further test on Thursday, which may change his situation.
“A quick test turned out negative, the subsequent PCR test, carried out to be on the safe side, produced a positive result in the evening. Xhaka stayed out of touch with his teammates all day.”
“He will do another PCR test on Thursday.”
Even if his second PCR test ends up being negative, Xhaka will be unavailable for Norwich following his red card against City.
Arsenal’s £50million summer signing tested positive for Covid prior to the clash with Chelsea at the Emirates on August 22, but he will be available for when the Gunners host Norwich next weekend if he returns a negative PCR test before then.