Gordon Durie has been delighted with the midfielder's impact at Ibrox.
The 20-year-old scored a fantastic long-distance strike for Rangers during their 2-1 win at Raith Rovers, just a week after another encouraging display for the Scottish Championship side.
And Durie says he expected this kind of quality from the youngster, having managed him for the Rangers Under-20s in the past.
Durie also believes Murdoch's enthusiasm and energy is an example to the rest of the squad.
“It was great goal for Andy Murdoch and brilliant for him to get his first one and it was no surprise because I’ve seen him do it a few times before for the Under-20s," the former Rangers striker said.
“But not only that, his performance, his work rate and his enthusiasm have been a different class.
“Anyone who comes into the Rangers team right now has to be enthusiastic and keep their jersey and Andy has done that in bucket loads. Out with his goal I thought he was fantastic, he was great last week and he’s kept his place on merit."
Rangers' win ended a run of three defeats in all competitions for Kenny McDowall's side and exacted a sort of revenge for Raith Rovers' Scottish Cup win over the Gers.
Murdoch and co are now back up to second in the Scottish Championship - 19 points behind league-leaders Hearts.
Rangers could cut that gap down to 13 points if they win both their games in hand, however.
Next up for Rangers are two away trips - one to Falkirk and the other to Cowdenbeath. More of the same will no doubt be welcomed from their 20-year-old star, while others will need to follow suit...