The Infrastructure Minister presented his formal plans on 22 December with a 15-day notice period.
Now the Scrutiny Liaison Committee says that is not enough notice to properly look into the arrangement when so much information is still not in the public domain.
It wants the decision pushed back to June.
The decision making requires an independent review as the detail has not been assessed and the government has therefore not been held to account. Due to commercial sensitivities only certain information can be provided to the public and without scrutiny this provides no assurances that Government has been effective or accountable to its actions to the Public to which it serves.