#1 Christian Pulisic (Borussia Dortmund)

A player who has been linked to the Blues recently, Pulisic’s career seems to have stalled a bit. He was one of Dortmund’s shining stars last season. However, the emergence of Jadon Sancho and Jacob Brun Larsen has curtailed his game time.
However, the American international remains a very good player with the potential to be even better as he grows. Diminutive like Hazard, Pulisic is a pacy player capable of beating opponents with a rapid turn of pace and intelligence.
His blitzkrieg-running style where he is always looking to take the ball forward at all times is a match made in heaven for Sarriball's forward-going style of play. He could slot seamlessly into the team if purchased.
Pulisic's ability to carry the ball forward rapidly and incisive running could help the team in moving faster up the pitch. This is as opposed to the ponderous, dithering style of Willian.
Though he is being spoken of as a possible long-term replacement for Hazard, Sarri and Chelsea fans will be hopeful of seeing both players combine at the same time at Stamford Bridge
Given the huge amount that Barcelona paid to sign Ousmane Dembele from Dortmund, the Blues will have to pay something in the region of £60 million+ to get the youngster's signature.