Luke McCowan is loving life at Celtic. There was a sense of excitement and feel-good factor when Celtic brought in McCowan from Dundee this summer and he isn’t disapointing. Celtic beat Motherwell 3-0 at the weekend, with captain Callum McGregor absent and it opened the door for the new kid on the block to start. Just like his previous showings, he didn’t disappoint and even opened the scoring for Brendan Rodgers’ side. The fact that Celtic put on such a performance, without their skipper and with the new players shining, it would have been music to the ears for the manager. One man who faced …