Serious question here but is all the hostility to JFE just down to the fact that he played for Utd?
We need four centre backs. Fourth choice will get limited games but it's viral that they come in do a decent job when needed through injuries or before a big European night. This is what he did throughout his time at Utd. He never moaned was happy to be a squad plater. I think this is why Utd were so successful. They had numerous players like him who good but not amazing (Nicky Butt another one that springs to mind) who contributed at key times in the season.
We really need someone in this window as Kompany as can't be relied on, and Mangala is not good enough. Imagine Stones or Otta out for the season and Mangala plays in CL against Barca. I think he would do a good job for us if given the chance.