That was the prediction today from the manager who coached the ex-Tynecastle top talent in the bottom tier at the beginning of his career.
Campbell Money worked with the young winger at Stenhousemuir before he won his big move to SPL club Hearts back in 2007.
And the St Mirren legend is pleased to hear the 23-year-old is close to making a comeback at the Gers.
Templeton has been out of action with ankle ligament damage suffered on the 3G pitch in the Annan game in the middle of last month.
But he expects to be back in training early next month and has even suggested he could be playing in three weeks. Speaking from Spain, where he is a member of the Scotland Under-21 coaching team, Money said his experience of the lower leagues will be crucial to his new club.
He said: "I am sure it isn't just the younger players who are finding playing in the Third Division difficult.
"I would imagine the older more experienced players are as well. The likes of Barrie McKay and Lewis McLeod and will be finding playing in the first team, never mind in that division, an experience.
"But I would reckon some of the other players, boys who have been used to playing in the Premier League for a long time, will be finding the Third Division a culture shock.
"But David played for Stenhousmuir in the Third Division and will appreciate exactly what it is all about.
"What is more, he did exceptionally well playing at that level and won his move to Hearts as a result of his performances."
MONEY added: "It's good to hear that he's getting over his injury. He had such a good start at Rangers, scoring two goals against Elgin, so to then pick up a bad injury was harsh.
"I think he will certainly be able to help Rangers home and away in the league due to his ability and his experience at that level."
The woeful performances of Ally McCoist's team on the road in the Third Division this season have not gone down well with the Gers support.
The Light Blues have drawn to Peterhead, Berwick and Annan and lost to bottom-placed Stirling Albion in their last competitive outing earlier this month.
Money, though, has not been surprised the Glasgow giants have found it tough away from home in the ultra-competitive league.
He believes that, despite the part-time status of its clubs, many people underestimate the difficulty of the division.
The former Love Street goalkeeper said: "I can't really comment on what the problem has been.
"But what I do know from personal experience is that a lot of the players who are in the Third Division are very good footballers.
"For one reason or another – perhaps they lack a yard of pace – they haven't made the grade with a professional club at First Division or SPL level.
"But that doesn't mean they aren't good footballers.
"If Rangers don't play games at the right tempo then they will struggle. I believe that has been happening."
HE CONTINUED: "But having worked with David in the past, I can say quite confidently that it won't matter what level he is playing at.
"David will try his heart out for the team no matter who the opposition is.
"But he does have experience of playing the clubs in the Third Division, of going to the grounds at that level, and that will help Rangers I am sure.
"He will be familiar with the surroundings and the standard.
"I would expect him to make a big difference to the team at home and away when he finally recovers from training and gets back into the first team at Ibrox."