As the EURO 2024 tournament rumbles on and takes the footballing world’s attention away from club sides, Celtic’s work continues ahead of the new season. Brendan Rodgers has been holidaying in Mallorca but that won’t have stopped him being heavily involved in the recruitment process as the Bhoys look for fresh faces to improve the manager’s squad. The transfer window is now officially open and there are real positions of need that require solid business. Joe Hart has retired, interest remains fierce in Matt O’Riley, while the loan deals of Paulo Bernardo and Adam Idah have expired. For Chris S…