What, Madrids entire back 4 is dreadful and their backup left/right backs are awful, Kaka has been a turd, Guti is off, Gago/Granero/Benzema are all crap/probably off.
Madrid could if they wanted to(had the money or the government just wanted to get them a really nice birthday present) buy huge money players for about 6 first team slots that are up for grabs. That was if the manager stayed the same, with Mourinho, either Diarra could be up for sale.
Frankly, keeper, Ronaldo, Alonso, Raul(if he's not retiring this season) are about the only "safe" players right now. Mourinho also gets unhappy when he can't buy who he wants so they'll likely give him a tonne to spend.
AS for spending before the world cup, the buying teams probably want deals done now while the players could be cheaper. But the selling teams will hope a huge world cup showing by any player might make their guy the one Real/Chelsea/Utd/Barca decide to make their big name signing at 60M+.
Players are with their national teams, training, busy and managers(club and country) probably don't want them distracted as they get ready for the World Cup. A couple weeks off after the cup finishes and the transfer market will go mental.