Honestly speaking, I have not witnessed a transfer market as dull as this before. I don't know whether it's due to financial crisis affecting some clubs that is affecting the entire transfer market. Surprisingly, even clubs who are not struggling with finance are not too active in the market as well.
Talking about the active clubs in the market, Chelsea has been active in the market more than any other club thou I see their activeness as a misplaced priority because they are bringing in players who have no much impact on the club. In fact, some of the players they bring in will become a bench warmer despite spending huge amounts in the transfer market.
Maybe Chelsea just listened to what Enzo Maresca said in buying some of these players in the transfer market this season in order to maximize the condition of the Chelsea team itself next season. Because who knows, the players that Chelsea have acquired could be better next season even though we judge them very mediocrely at this time with a level of influence that is not that big on the Chelsea team. But it is true that this season's transfer market is really not as fierce as the previous season due to the inactivity of some big teams who are targeting great players.