Celtic have midfield arrivals on their mind before the deadline as Brendan Rodgers looks to replace Matt O’Riley. The Denmark international joined Brighton & Hove Albion over the weekend for a fee that will reach £30 million, including add-ons. Nevertheless, Celtic took control against St Mirren despite missing his presence in the engine room. Paulo Bernardo, Reo Hatate, and Callum McGregor combined well in Paisley as the visitors cruised to a 3-0 victory. Truthfully, the reigning Scottish Premiership champions have had to adapt several times over the years after losing key players. Ultimately…