Tony Mowbray has praised Joe Nuttall for his impact during Rovers' FA Cup first-round win over Barnet on Saturday.
Nuttall came off the bench with Rovers trailing to level the scores with his second goal in a week, as the Blues secured an eventual 3-1 win.
Asked about the striker after the game, Mowbray says he was pleased with Nuttall and challenged him to keep working hard.
“I’m wary because Joe is still a young lad, but he’s got some great qualities," he said.
“He can run, he’s big, he can head it and shoot with both feet. He scored today and I’m pleased for him.
“I was thinking about starting him today; I was hoping we’d get the job done by half-time which we didn’t.
“He came on and had an impact, he scored a goal which is all you can ask for.
“His time is here, he’s played two games in a row and scored, and he’ll probably play on Tuesday and have another chance to score.
“He has to keep going and make my life really difficult. We have Graham and Samuel and Antonsson so, when I’m picking teams, he has to put his name at the top of the list.
“I think he’s scored a lot of goals for our Under-23s; they’re a side I love watching. They have a great camaraderie and there’s no question about their desire to win.
“If they can keep doing that, I like to play young players but we do have to try to win matches and to ask them to get the job done can be difficult at times.
“Let’s see what happens, sometimes it needs a man to get the job done but there’s a lot of quality bubbling underneath here.