Can't remember which one of the ITK's said it, but it was stated that they were looking at 4 candidates for SD, one of which was Scandinavean. This apparently was whittled down to 2. This was mentioned before the Gus U-Turn, so I believe they will have spoken to the the 2 candidates, and appointed one before they started interviewing managers. That would make massive sense. No point in someone like Rodwell or Sartori appointing a manager, then finding out that the SD and the manager are not compatible.
So far, Schwartz has been the only name mentioned, but whether it's him or not is anyone's guess