Paul Dickov described Harry Forrester as a firecracker after his last-gasp winner at York.
But the Rovers boss says the midfielder’s spark must be nurtured.
Rovers – convincing winners against Yeovil in their League One opener on Saturday – had made five changes for the trip to Bootham Crescent and looked sluggish for the most part.
Former Brentford man Forrester was one of those to slip to the bench, despite scoring against the Glovers.
But he more than proved his worth to Dickov by firing Rovers into the Capital One Cup second round in injury time.
“The one real piece of quality in the game came from Harry Forrester,” said Dickov. “He’s a real firecracker, but he still needs games under his belt.
“He’s a very good footballer and is very forward thinking. He wants to make things happen; we saw that when he came on and we saw it with the goal, which was a special moment for us.”
The Minstermen were much the better of the sides for large periods, with Anthony Straker the dominant threat in the first half.
It took almost half an hour for Rovers to even muster as much as a shot, but even then, Curtis Main’s long-range effort hardly troubled York goalkeeper Jason Mooney.
However, the introduction of Forrester in the 66th minute changed the game and his winner came as a great relief for Dickov.
“A win is a win in the cup, that’s the most important thing,” he added. “We’ve had two games now – with two very different performances – and we’ve had two wins, which is pleasing.
“We knew it was going to be a really tough game; York made it really difficult for us, but we knew they would.
“They’ve picked up plenty of results at home and we knew how hard it would be.
“We were able to make five changes and still keep a clean sheet which is great, but football-wise we didn’t play anywhere near the way we wanted to.”