Throwing away Leeds in injury time

It's the morning after the night before; a remarkable finish in Newcastle's 4-3 Premier League win over Leeds United. We have a go at analysing some of the action, but it's a bit like trying to organise jelly; jelly that's on fire.
As many thousands have already pointed out, there could have been no more fitting tribute to the great Kevin Keegan. It was lovely to see such warmth for the great man on such a cold night, and there was a show of support for Joe Willock as well.
What next, then? On the up in the league, but struggling for centre halves. Is the club likely to do any business in the January transfer window, and who will line up against Bournemouth in the cup?