"Problem" with someone like Rose is that they're probably unlikely to accept an interim role I would guess at least.
I think we'll be quite attractive to managers come the summer as long as we stay up. So going for someone permanent now would be picking from a much more limited pool than we could come the summer.
Lying to someone, giving them a proper contract then just binning them off in the summer seems both expensive and like a bricky thing to do.
But perhaps getting a proper and at lest reasonably suited manager in right now should be the biggest priority. With our record of trying to get "the right manager" being as flawed as it has been I'm not sure the likelihood of whoever we get come the summer being right is that much higher than just going for whoever is available now, like Rose.
Alot of teams will be looking in summer as well.
Unless it's Poch and they have it wrapped up already (highly unlikely since one would have assumed they had an interim lined up a month ago), if there is a quality manager available now, we should go for it