In order for the President to assign any of the functions of the Union Government to the State Government, it is done in consultation with the Government of the State. This means that the President will discuss and seek advice from the State Government before making the decision to assign a particular function.

It is important to note that this process involves mutual communication and collaboration between the President and the State Government. The State Government plays a crucial role in providing input and feedback on which functions they are capable of taking over. This ensures that the assignment of functions is done in a manner that is beneficial and feasible for both the Union and State Governments.

It is worth mentioning that the option stating "In his discretion" is not correct, as the President does not unilaterally make the decision without consultation with the State Government.