After the highs of the Champions League on Wednesday night, it’s back to domestic action for Celtic this weekend with the visit of Falkirk in the Scottish League Cup. Celtic put a lot of effort and running into their 5-1 win over Slovan Bratislava and with lower league opposition up next there’s expected to be a bit of rotation in the team. Brendan Rodgers won’t be taking anything for granted against the Bairns but has the squad depth to make changes without significantly weakening his starting eleven. Neither Alistair Johnston nor Cameron Carter-Vickers were spotted in Lennoxtown for Friday m…