I don't think the FC is a wholly owned subsidiary (correct me if I'm wrong, I've not checked up on this level of info), but I would assume the PLC has a majority (and probably controlling) stake in the FC, so it doesn't mean that they own everything relating to Sheffield United FC, they just own a controlling stake in the Football Club.
This would probably explain how they have transferred the ground over to the PLC without having to go to vote with any other share/stakeholders, as their vote would outweigh any opposition (i.e. if there were 100 shares in the FC, the PLC owns 51 of those shares with everyone else making up the remaining 49. That's what I make of it anyway, but I'm young and inexperienced in that area of accounting so hopefully someone will correct me if I am wrong!)
There is definitely something odd going on here IMHO, why hasn't he explained the reasoning behind this in the letter? I'm not asking for a full 100 page report on why, but surely a couple of paragraphs or a page at the most would suffice? All he seems to have done is worry rather a lot of people and left them with many questions.
If he has the interest of the club and especially the fans at heart as he says, then the shareholders would and SHOULD have received much more than a one page letter with no real explanation of whats going on. It literally reads like "oh we've been trying to get investors for some time, but it hasn't happened so I'm moving the assets to the plc. Kthanksbye UTB blah blah". Why though Kevin? That literally doesn't mean anything to anyone but yourself as nothing is made particularly clear otehr than the fact the transfer of assets is going ahead!
"It makes it more attractive to potential investors." How? I would quite like that area in particular to be explained because I'm not so sure it does in all honesty, surely an investor would want some form of security against their investment as opposed to what will now effectively be just staff?
Perhaps we really do need a supporters group now. I'm not saying one to create problems and harass every decision that is made by the club, because that would not be beneficial at all, but this is a huge decision that quite clearly needs clarifying and he doesn't appear to have to answer to anyone as to why he has done it, which is a huge concern for a lot of people.