Well we don't need lots of first team replacements; I'd be happy (read not ecstatic, but happy) with one centre midfielder and one centre back, if that was all we were to get.
We need depth more than real real starting quality at the back, as I'd be happy starting Jones alongside one of Evans and Smalling now. Obviously if Evra goes we need a left back but that isn't a foregone conclusion yet, and if he stays he's staying as first choice more likely than not. Depending on whether we continue with Mata/Shinji/Adnan, we might not need wingers and Valencia and Young are good second choices, they just shouldn't be automatic starters (not to mention Zaha and Lingard coming back).
I'm not going to panic yet; there's plenty of time, even with the World Cup, to get two or three bodies in.
ST Rooney
AML Mata/Adnan
AMC Kagawa
AMR Adnan/Mata
MC Carrick/Schneiderlin
MC Felliani
DR Rafael
DC Jones
DC Smalling/Evans
DL New LB
GK De Gea