Tony Mowbray believes the addition of Jacob Davenport will add another dimension to the competition for places in the Rovers midfield.
The highly-rated youngster completed a move from Manchester City on Monday and will hope to impress the boss quickly, having played in the Championship on loan at Burton Albion last season.
Mowbray says no player is guaranteed a place in his starting line-ups, and expects the battle for a berth to be "fierce".
“People will have to compete with Jacob for a place in the team, and the competition is going to be fierce," he said.
"Corry [Evans], Richie [Smallwood], Lewis [Travis], Peter [Whittingham], they all have to compete.
“The best players will get into the team, those who know how we play and what we do. Jacob will have to spend a few weeks getting used to that, of course.
“He’s still very young, he’s got to force his way into the side against the competition that we’ve got."
At just 19 years of age, Davenport is up against experience, of course, but the manager hopes competition for places will bring out the best in everyone.
“He’s got to compete with Smallwood, who was one of our better players last year; against Evans, who’s an international player; and against Travis, who we think extremely highly of," he added.
“That’s reason we buy young, hungry players who want to force their way into the team, hopefully it makes everyone better.
"Rothwell can play centrally too. We want as many good players as we can get at this club.”