  An extended notion of quasi-exactly solvable potential model is used here to
treat quasi exactly solvable (QES) Bose systems. We report an analytic
expression for the Ahoronov Anandan non-adiabatic geometric phase for the QES
Bose system in general. The generalized expression is then used to study some
particular cases of physical interest and we observe that the geometric phase
can be tuned.
