David Joyes is stepping down from his role as Charlton Athletic chief financial officer to join Middlesbrough.
The Addicks have already seen chief executive Katrien Meire leave at the end of last month, taking up the same role at Sheffield Wednesday.
But Meire is not the only high-ranking member of staff to make a switch to the Championship. Joyes will also be on his way soon as he takes on a role with Boro.
Joyes has been with Charlton since September 2011.