I don't think 5-3-2 is the actual formation. I have a feeling that Chiefy is going with this until the return of Rojas.
Sheridan drops out of the backline and Rojas comes in along side Kosta and Ishige up top.
Yes, pretty much what I've put below:
Oluwayemi
Payne-Hughes-Wootton-Sutton
Retre-Rufer-Nagasawa
Rojas-Barbarouses-Ishige
However, Chiefy has also teased a formation change for this season. Assuming a 4-2-3-1, Retre and Rufer as the double pivot with Nagasawa just in front of them.