Thank you for question
My name Clare
I shall do my best to help you but I need some further information first
Has the father spoken to the mother about this?
The mother can apply to the court to prevent the move - and then if necessary the court will decide what is best for your grandson.
Given that he is 14 his wishes will be seen as being of great importance - and there is little doubt that the Court will agree to the move - IF of course
the mother even bothers
I hope that this is of assistance - please ask if you need further details