Will Celtic sign a central midfielder before the end of the transfer window?

The Scottish transfer window will ‘slam shut’ on 1 September so Celtic and Ange Postecoglou have around one week to go bring in another player, or two. The champions have been very active in the window so far, securing permanent deals for Cameron Carter-Vickers, Jota, and Daizen Maeda as well as bringing Alexandro Bernabei, Aaron Mooy, Benjamin Siegrist and Moritz Jenz to Celtic Park...