ok , that's a different take on the question than the one I looked at, as I will admit I presumed that all this would have taken place via the transfer window. Obviously if Westwood was released then yes he could be signed and registered by us ,due to having no contract, outside of the transfer window.
However that brings up 2 points.
1) how much would that realistically save Wednesday, terminating his contract, so that a club can sign him 2 or 3 days earlier than waiting for the transfer window to open.
2) If that is the case then, given that the FL don't do registrations outside of normal business hours (except on transfer deadline day), then as of now, we have 12 hours 40 minutes for the FL to register any non contract player signed by ourselves, to be able to play against Forest. Given that the FL probably don't start work till 9:00 am, that gives them 3 hours to do the registration, which thus reduces the chances that I gave of zero % to any new signing playing against forest to a very unlikely 1% chance.
Whilst I accept your interpretation of Leeds60 post as being viable, nor do I have any issue with his reasoning on why Westwood may be joining ourselves, I would say that thinking that he will make his debut against Forest is one of more hopeful imagination than anything else.