This year they have hired one of the most wanted manager in europe, they have already bought quality players (Robben, Chech, Ferreira) and are ready to spend silly money on the likes of Gerrard, Rooney and others.
I dont see how the three players they have bought already improve their team. They already have IMHO the best keeper in the Premiership in Cudicini.
Robben is unproven in the Premiership so who knows if he will be any better than an injury free Duff. And Ferreira - is he not the guy who gifted Greece their first goal and hasn't played since ? Glen Johnson is likely to be a pretty good full back anyway.
They might have silly money to spend but look at the players who have already turned them down - Ronaldo (the Real one), Beckham Roberto Carlos, Mexes etc