Brendan Rodgers will be keeping an eye on the progress of his Celtic loanees as several figures previously on the periphery at Parkhead look to impress the Irishman. While the first-team continue to thrive after the Bhoys saw off Motherwell at Fir Park to extend their unbeaten domestic run to 11 matches, there are players still on the books who will have long-term designs on forcing their way into contention. The loan market has been a source of strength for Celtic in recent years. Evaluating outgoings, Liam Scales is the prime example of what can happen when the right circumstances align, pro…