Peace kchughtai
No, he Isa (AS) is already a prophet but will be the last to die, but not the last to ‘become’ - i.e. not the last to be born or be given prophethood.
I hope this is very clear, because this is often repeated by Ahmadis and the reply is often given by us to fall on deaf ears. Our distinction of Finality of Prophethood stems from the fact of the last one to be given prophethood not the last one to live on Earth.