Any word about his assistants? At Nice, they were Frédéric Gioria, Guy Mengual and Alexandre Dellal, but it seems to me that they are still employed at Nice (if wikipedia is reliable), so no idea if they would necessarily move with him. Gioria was at Nice before Puel arrived so not necessarily him. Guy Mengual was in charge of the U19 team and played with Puel at Monaco, so he could possibly come with him. Alexandre Dellal was the physical coach, and also worked with Puel at Lyon. With Jan Kluitenberg going, it is a role that needs filling.
So if I was to hazard a guess, I'd say Guy Mengual and Alexandre Dellal will come with him.