The English right-back withdrew from Saturday's win over Crystal Palace due to illness.
"Our game basically started at 12 o'clock against Palace; he took responsibility to speak with the doctor," Lijnders said.
"It was not easy because these guys – it says a lot about our group anyway – they want to play everything, [even] if they feel a bit shaky or ill, but he took the responsibility.
"There are no Covid symptoms. We test regardless. He should be fine in a few days but Norwich comes too early."
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