1. Kramer does make a fair amount of sense, though only if we don't sign Strootman.
2. Vlaar I could see just because our defenders have gotten hurt so much. This might depend on what LVG thinks of Smalling and Evans as Jones' backup at RCB.
3. Chiellini and Rojo would give us two good LCB's, but I doubt it happens. If anything I could see him going to Madrid to replace Pepe, but he'll probably just stay.
4. Yarmolenko/Konoplyanka are different wingers, but considering they're 24 and are decent footballers, they make some sense as competition for Januzaj on the right-wing and cover for Di Maria out left. Lots of other options here, too. It's also (sadly possible) we just keep one or both of Young and Valencia as wide cover. I had Zaha earmarked for this spot, but at this rate he looks like he'll need still another year on loan. He's signed until after the 17-18 season, so we could loan him out again next year (15-16) and still be able to bring him back with 2 years to go on his deal, which is tight but still a bit of time to see whether or not he is to be kept or sold.
So, yeah, I think we should take a serious look at Kramer as the CM we badly need, since he can backup Blind and Herrera and play with them in tougher games, too. And Vlaar coming in with Smalling leaving wouldn't shock me, though it's a bit-short term in direction. But we clearly need a veteran defensive leader of some kind and maybe if we strike out on Hummels/Pique/Miranda we will settle for a free Vlaar. Maybe more likely to happen in the summer, though.