If in exchange for Xabi we ended up with Silva, Martinez (or similar) and Negredo I think i'd be OK. If we didn't get either of those three and kept Xabi I'd be happier. Xabi is, at least, a known quantity. If we don't manage to get a decent replacement and strengthen our remaining weaknesses (Left Forward, Nando Plan B) and lost Xabi we're f***ed. And assume Bob does one, who we gonna get as a Right Back?