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Yesterday, Chelsea confirmed the completion of a transfer for Gary Cahill, the Bolton centre-back.

This has been met with skepticism from some Chelsea fans and praise by others.

Just another polarizing moment in the 2011/12 Chelsea season.

But in the end, it is one thing for certain—the introduction of new blood.

And for a team that is struggling, new blood can only be a good thing.

I am of the side that believes this to be a copout buy. Just Villas-Boas playing to the English fans' need for English blood to lead a backline, the pride of the Three Lions.

I don’t see how a man who has been an integral part of the worst defense in the league is going to come in and make himself relevant on one that needs to be the best if they are to win anything.

In the end, none of this speculation among the fans is meaningful, as the signing is not to excite the likes of us, but rather to stir up the play and energy of the players on the team.

With Alex on his way out and Ivanovic currently injured, Villas-Boas is facing two crises in the middle of the backline: 1) should Terry or Luiz get injured, someone will have to fill in out of position, and 2) the threat of complacency among Luiz and Terry.

The second fear is much greater than the first for any coach, because it basically means whatever those two do, during a game or in practice, they will be assured the starting spot by simple virtue of the team's injuries.

You never want to have players at this level that believe they are untouchable, just like you don’t want players to fold when they are beat out for a position.

Cahill coming in helps alleviate this matter. At €25 million, odds are Luiz is not going anywhere soon and Terry will probably be safe as long as Chelsea fans look at him the same way they look at Tebow in Denver.

But the added pressure to be sharp 100 percent of the time will keep them sharp 110 percent of the time, as they know a mistake could mean the loss of their spot.

This is not only meant to be for places where injuries are rife. Every single player can use this motivation. Sturridge needs someone to keep him honest, and even Mata has to be given a little competition.

This does not mean go out and break the bank on players who are just there as figural cheerleaders, but find young, hungry hard-workers who will take full advantage of any chance they are given.

If this January transfer window is going to give Chelsea any hope of winning the Premier league, it's not going to be signing one of the ridiculous names that has been thrown out there for £35 million.

It will be by getting more players like Cahill who will make the current squad better.