We'll surely be able to pick up a centre half on loan who can come in as a backup option and who earns a quarter of what Keane does. As we see with Keane, even though he's now fourth choice he's still played plenty of games this season.
I'd like us to utilise our loan slots on a centre half as backup, a striker if possible on a deal similar to Alcaraz and a central midfielder either Mangala if he's fit within the next 3-4 months or similar player.
Save the real money for a starting striker, right winger and a set of full backs.