We need someone now, not in a year or two - Lindelof may well come good, also at some point Utd will go with three at the back imo but we need better full backs / wing backs for that to work ( and better /more experienced CB's)
Leicester are more than welcome to take one (or two) of Rojo, Jones and Smalling off our hands - we might even give them a decent deal with Maguire coming the other way

To be fair at that level, without so much pressure on every game any of the above three would actually be a decent signing for Leicester (albeit the expected wages means a deal would never happen anyway)