Amari'i Bell, Derrick Williams and Harry Chapman all weren't involved in the squad at Barrow on Saturday, but Tony Mowbray insists there is nothing to be concerned about by the trio's omission.
The three Rovers joined international quartet Charlie Mulgrew, Jayson Leutwiler, Corry Evans and Ryan Nyambe in not being taken north to Cumbria on Saturday.
A mixture of illness and injury kept the trio back at home, but the boss told reporters after the win at Holker Street that there's nothing serious to worry about on the injury front.
“Those three couldn't play but there are no real concerns, they're not big injuries," Mowbray said after the away win against the National League side.
“They have knocks and niggles so there's no need to take them to Barrow to play on a dry pitch and potentially make things worse."
And looking ahead, Mowbray added that he'll be upping the gears the deeper his side get into their pre-season schedule.
Rovers face further pre-season trips to Rochdale, Mansfield Town, Rangers, Bury and Blackpool before the Championship curtain-raiser against Charlton Athletic at Ewood Park on Saturday 3rd August.
“We'll have another intense week in training where we'll play more football, football, football. The games come thick and fast after that.
“We have a Saturday game, Wednesday game, a Sunday at Ibrox. We'll build things up and hone a starting team as the games come and go.
“We'll add structure with each game. Against Barrow we fielded two teams with a mixture of young and old players, but that maybe won't be the case the further we get into the pre-season games."