"It is incredible to see what Eden can do".
However, Pulisic said he wanted to match Hazard, who has helped Chelsea win two Premier League titles, an FA Cup, an EFL Cup and a Europa League. "He (Hazard) is a guy to look up to and what I would love to become".
The final fee for Hazard has not been disclosed by either clubs with reports suggesting it is between €25 million to €40m.
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It was Pulisic's first trip to Stamford Bridge since he visited the Chelsea stadium with his father, Mark, when he was 8 years old and they spent a year living in England while his mother, Kelley, taught on a Fulbright Scholarship.
Hazard led Chelsea in both goals and assists as the club finished third in their first season under Maurizio Sarri, scoring 16 Premier League goals while setting up another 15. He is also the youngest player to captain the US men's national team, but says he is motivated to set new records now he has arrived in the Premier League. I want to make an impact and be a team guy who is going to give it everything.
"I always wanted to play professionally, especially in Europe, and the Premier League was what I was able to watch growing up in the USA, and it is always where I wanted to be", he added.
Pulisic will not feature for Chelsea this season, but will no doubt be a key player for the Blues heading into the new Premier League campaign, regardless of whoever is sat in the dugout. I worked with the coach in Moenchengladbach and I also know some players so I think it was the best choice.