Celtic boss Brendan Rodgers has an ideal amount of squad depth, even if he is prompted to make tough decisions every week when putting together his starting line-up. With eight players joining the Bhoys in the summer, the Irishman has competition for places across the board, fulfilling his ambition of having a 25-man squad to pick from after balancing shrewd recruitment with several outgoings. Ultimately, his work in the window has paved the way for early season success. Celtic are unbeaten in the Scottish Premiership, while their advances in the Champions League can be attributed to a higher …