Stoke City's Under-23s will join Rovers in their Checkatrade Trophy group.
Rovers were paired with fellow League One sides Bury and Rochdale when the initial draw was made last week, with the young Potters now added to Group C.
The opening group match will see Rovers at home to Stoke City week commencing 28th August, with an Ewood clash against Bury after that during the week commencing 2nd October.
Tony Mowbray's side end their group away to Rochdale week commencing 6th November.
Dates for the Checkatrade Trophy ties and ticketing availability will be confirmed in due course.