Aside from the usual problem of still not sorting out our midfield! Remember last year we got so desperate in midfield we got Scholes back who was great for half a season and it may be coincidental that is also the period RVP scored the most goals!
Oh and actually what is sound about that:
Garay, a solid option, but we already have Ferdinand, Vidic, Jones, Smalling, Evans, thus hardly a priority.
Baines, again a solid option, but we already have Evra, Fabio and Buttner
Varela, a promising youngster at RB, but we already have a young and fantastic Rafael with Smalling, Jones, Fabio and Valencia all capable of adequately covering. Still makes sense as a natural back-up, but hardly pressing.
So all in all not that sound!!