Young Canaries keeper Jon McCracken has been forced into a temporary break in his trial spell with Southend United.
McCracken, 22, has been training with the National League side with a view to a possible loan deal being agreed.
However, he has now returned to City's training centre at Colney to receive treatment on a slight injury.
Blues boss Kevin Maher said: “He’s gone back to Norwich to have something checked out,.
“He’s got a little knock but hopefully he will be back in and we can have a look at him.”
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