There isn't a unified stance I believe. It depends on whether you consider the necktie as something specifically from non-Muslim clothing. I think considering that the necktie is derived from the Cravat and that it later also was a specific western EU-Christian thing, it is supposed to be banned.Wearing clothing specific to non-Muslims, is forbidden.
Wearing clothing specific to non-Muslims, is forbidden.
There aren't any human exempt from salvation if he should follow the guidelines set fourth in the Holy Books properly.