For a long time Chelsea have lacked something in midfield.

They have some exceptionally talented players - Frank Lampard, Ramires, Oscar and Eden Hazard to name but a few - but I have always had the feeling that there has been something missing. The team needs somebody who is capable of playing in a defensive role, but also has a creative mindset and is looking to play at a high tempo.

Ramires is possibly the closest thing Chelsea have, although his attacking threat comes more from his running with the ball as opposed to his passing ability. The pedestrian John Obi Mikel is far too sluggish and cautious for my liking.

It would appear that manager Jose Mourinho agrees with my assessment, as Chelsea have been linked with a move for Benfica's defensive midfielder and former Chelsea youth product Nemanja Matic in January.

However, I think it would make more sense for Mourinho to continue with the man he turned to for Sunday's clash against Liverpool, David Luiz.

The defender's talents are irrefutable, although there have often been doubts about his defensive abilities. In a less restricted midfield role he was able to thrive, offering a dependable shield for the back line which successfully kept Luis Suarez isolated, whilst creating a number of Chelsea's attacking moves.

His driving runs forward have long been one of the most powerful features of his game, and his increased freedom made these more regular and more potent than in his previous role. His passing was also excellent, playing a perfectly weighted ball over the Liverpool back four which eventually led to Samuel Eto'o's decisive goal.

It would appear that the move to a new role, which has long been suggested by many pundits and was briefly used by Rafa Benitez (who I feel discarded the idea far too quickly), has coaxed the best out of an extraordinarily gifted player who often seemed lost and incongruous at the centre of defence. 

More than that, it has added some much needed pizazz to a side that has on occasion looked too slow. It also appears to have solved one of Mourinho's bugbears if the current side, as well as saving a large sum of money and lost pride in bringing back a player deemed not good enough by the club previously.

If Luiz can continue performing to a high level in his new role and a Chelsea striker can find their scoring boots, then the Blues will certainly be challenging for silverware on all fronts.

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