1. Christian Pulisic
With FIFA’s two-window transfer ban in mind, Chelsea signed Pulisic in January 2019 for a stunning €64m.
The Blues allowed him to return to Borussia Dortmund for the remainder of the 2018/19 campaign on loan. He then linked-up with his new team-mates last summer.
Under Frank Lampard watchful eye, Pulisic has enjoyed a decent start to his Stamford Bridge career.
Although it may too much to compare him to departed star man Eden Hazard at this point of time.