Celtic’s midfield has notably changed over the last few weeks amid incomings and departures during the summer window. Matt O’Riley’s move to Brighton & Hove Albion, alongside Tomoki Iwata’s switch to Birmingham, have paved the way for Arne Engels and Luke McCowan to join in their place. Last weekend, Paulo Bernardo’s performance in the Glasgow Derby made for excellent viewing. Meanwhile, Callum McGregor and Reo Hatate have shouldered added responsibility in the engine room to drive the side forward, not that they didn’t already perform that function anyway. Odin Thiago Holm remains in the equa…