Lately here in the west, as I presume you've heard, there is a bit of controversy within the Sunni community regarding individuals who deny the Nuzul of Isa (AS). That being said, as I know a fellow Shia who was roped into this belief, what is the Shia view on an individual who rejects the Nuzul of Isa (AS)? I have seen many opinions from amongst the sunnis that such a person is anything from a kafir to a man of knowledge! However I would like some clarity on our belief regarding such a person.

Such a person with such a belief is wrong. If they insist and spread this they are committing sin and should be intellectually and evidently challenged with proof