Abdennour was amazing for Monaco a couple of years ago, not sure what he's been like since though. €15m isn't a big layout considering how good he could be for us IMO.
We were linked in Schteve's reign iirc.
Smalling would be good:
http://www.independent.co.uk/sport/football/transfers/manchester-united-transfer-news-chris-smalling-leave-victor-lindelof-newcastle-everton-a7790831.html