Hi John,
If you are after the standard bank angle, then that will require an aileron input
With wings level and the rudder balancing the asymmetric thrust yaw, the aircraft will side slip due to the side loading of the rudder. The induced roll must be checked with aileron (and possibly roll spoilers).
With bank towards the live engines, an opposing side slip force can be generated (Weight * Sine(Angle of Bank)) and total side slip can now be reduced to zero resulting in no aileron required.