With Paulo Bernardo and Adam Idah back in the building, alongside this summer’s new goalkeeper arrivals, Celtic can now get on with the business of improving last season’s squad. Brendan Rodgers has made it a stated aim to come out of the transfer window with stronger options compared to last term. So far, that hasn’t transpired but there remains hope that the Bhoys can pull off two or three deals in the final two weeks of the window that have supporters feeling satisfied. One position undoubtedly needing care is left-back. Only Greg Taylor is currently available on the left flank with no prov…