Ben Knapper is to start his new job as Norwich City sporting director early - on Monday, 13 November.
Outgoing sporting director Stuart Webber will leave the role after Saturday's away trip to Cardiff City.
Knapper, 36, was originally due to move to Norwich on 27 November to replace Webber, whose near seven years in the job will end after "a handover period".
He has spent the last 13 years with Arsenal, latterly as loans manager, and was at Scunthorpe United prior to that.
One of the first issues for Knapper to address will be City's woeful form.