Mr Verherstraeten is in talks with Spain's Cafasso that is still to land the definitive contract.
The complex will also include a youth detention centre, workshops, visiting areas, a hospital and offices for the security guards.
Architects opted for small scale buildings: "The buildings emulate the structure of a village. Communal buildings can be seen as the town hall. Building clusters are like multi-family dwellings."
The cells are housed in the cluster buildings. The whole structure is intended to reflect a humane detention policy.
As a result of the new building style local residents and inmates will both enjoy a varied view. The prison wall will be incorporated into the existing surroundings in the most natural possible way.
Building is expected to starting 2015.