Neville told the Republik of Mancunia: "I think it's a big risk losing Vidic and Rio at the same time.
"There are young centre backs coming through, Phil Jones, Jonny Evans and Chris Smalling. And I think if we're signing a new centre-back coming from a different country who hasn't played here before, the idea of having a stalwart there would help.
"I think it's a risk. But we'll see how that pans out."
For the big stories and the banter follow us on Twitter: @tribalfootball