Serbian midfielder Nemanja Matic is unable to play on Wednesday; he is cup-tied from his time at Benfica this season. This should lead to Brazilian defender/midfielder David Luiz continuing his recent role in the Chelsea midfield.
This will mean that Luiz will come up against Paris Saint-Germain's Italian pit-bull terrier, Marco Verratti. The former Pescara midfielder has been superb for the French side this season, and he will be very much up for Wednesday's matchup. With Thiago Motta taking the deepest midfield role, Verratti will be asked to play his usual role of passer and ankle-biter. Verratti will get heavily involved in the physical side of the midfield battle, and if Luiz is not careful, he could fall into the Italian's clutches.
Verratti is very good at nipping in, stealing the ball and starting a PSG attack. It usually happens in a blink of an eye, and if Luiz is caught being cautious or ponderous on the ball, he could be in trouble.
For David Luiz, he will also have the chance to put Verratti under similar pressure. Quite often, the Italian holds onto the ball for too long inside his own box. If Luiz can push forward and put Verratti under pressure, then he could get the better of this intriguing matchup.
The Italian has a reputation for picking up needless yellow cards, and his fiery temperament can get him into trouble. Luiz should be able to rile up Verratti if he can use his height and weight advantage to outmuscle the diminutive midfielder.
If David Luiz can stop Verratti from pulling the strings on Wednesday, it will stop a lot of what PSG have done very well this season.