Former U.S. men's national team boss Jurgen Klinsmann is impressed with the growth in Christian Pulisic.

The American winger has not enjoyed the best of seasons for Chelsea, as he is in and out of the team under Thomas Tuchel.

However, he has scored some vital goals this term, and is a constant threat at international level for the USMNT.

"I think he's done fantastic," Klinsmann said, per Goal.com.

"Christian, over the years, you could see how he got more and more mature, how he took more and more responsibility onto himself on the field and off the field. He has a lot of character and a lot of personality.

"What he went through, starting at 17, is just wonderful. It's wonderful and he's still by far not there yet. He's just able to get better and he will become even more of a leader.

"The experiences that he has already now under his belt are fantastic: playing in the Champions League at Borussia Dortmund and then moving on to Chelsea and winning it and playing on the highest level week in and week out. The roster there, it's basically two national teams with the 22 players and having that battle every day in training, and then hoping to start on the weekend or maybe coming off the bench with players that are just top-class players.

"I think he went through an outstanding process over the last couple of years and he's definitely the leader figure for the U.S. national team going forward and he was it already over the last two or three years."