#2: Manchester United's stellar attack
It's no secret that United's firepower has lost some of its sharpness in recent weeks, with Lukaku not firing on all cylinders as usual. In spite of all this, United have found a way to score goals and win points, something they will aim to do at the Stamford Bridge.
Marcus Rashford has taken on the mantle for United in their last few matches.The 20-year-old forward has been impressive, considering his contributions to United in October.
Gary Neville recently suggested that Jose Mourinho should unleash the trio of Rashford, Martial and Lukaku against Chelsea, owing to the Blues' weak displays in defence. The Portuguese gaffer might as well heed the former United legend at Stamford Bridge.
Lukaku might not be scoring, but he is still getting in the positions to get chances. Should Sunday turn out to be his day, Chelsea's abysmal defence is in for big trouble with the Belgian spearheading the United offence. Martial and Rashford will certainly offer their services, and who knows, Mourinho might emerge out of the Bridge with a smile.