The Champions League has always been somewhat of a "Holy Grail" for Roman Abramovich, and for Andre Villas-Boas, it has perhaps become the insurance policy that could keep him in a job.
The league title seems out of reach now and, although Chelsea are still competing in the FA Cup, the Champions League run may define AVB's tenure as Blues manager.
But a huge obstacle lies in his way before he can even think about reaching the quarterfinals in the form of Napoli.
The Italian club has seen a resurgence since their back-to-back promotions after near-bankruptcy and represent a serious threat. Just ask Manchester City fans!
Here are six tactical decisions that the under-pressure Villas-Boas needs to get right if Chelsea are to survive their trip to the Stadio San Paolo with a chance of progressing to the next round.