One of the big frustrations for Celtic this season has been the inability to keep several key players in the squad fit and healthy. Cameron Carter-Vickers, Callum McGregor and Reo Hatate are all influential stars who have had significant spells on the sidelines. Now, finally, it looks as if Brendan Rodgers will again have his strongest squad available – and just in time for a massive push towards a potential league and cup double. Hatate was the latest big name to return to the team in Sunday’s 3-0 win against Livingston, having picked up his most recent injury on international duty with Japan…