RB Salzburg boss Jesse Marsch has said Frank Lampard did not rate Christian Pulisic at the start of his Chelsea career because he was American.

Pulisic struggled for regular game time after his £58 million move from Borussia Dortmund and said he was "frustrated" at the time.

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Lampard said the forward needed time to adapt to the Premier League but Marsch believes Pulisic was being unfairly treated by the Chelsea boss.

"The perception in Europe, mostly, is that the American player is willing to run, willing to fight, has good mentality, but technically they're not very gifted and tactically they're not very aware and their experiences aren't very big," he told Extratime Radio.

"But we're seeing that change. We're seeing more and more of these players develop themselves.

"Even Frank Lampard, when I spoke to him in preseason a year ago now, I was talking to him about having Christian Pulisic and he was kind of like: 'Yeah, he's got a lot to learn so we'll see how he does.' I said to him: 'Listen, he was at Dortmund, and they had a high level of tactical thinking, of playing, and he was very successful.'

"He was considered one of the best young players in Germany and that's in a group of players with Timo Werner, Kai Havertz, Joshua Kimmich, these kinds of players. He was in a group with those players, and it's not just because he was talented but it was because he understood the tactics and understood how to fit in the game and he was developing a real astute way of how to play.

"I could see right away that Frank Lampard's idea of Christian Pulisic was shaped a lot by the fact that he was American and not that his football education came a lot from what has happened in Germany. Since then, I think Lampard has learned that Pulisic is a lot better than he gave him credit for.

"Christian had to fight for that, which is the American quality, but he's a damn good player. Same with Gio Reyna, same with Tyler Adams, same with Weston McKennie."

Pulisic went on to enjoy an impressive debut campaign at Stamford Bridge, contributing 11 goals and 10 assists in all competitions. He was also nominated for the Premier League's Young Player of the Year award.

The United States international was handed the club's iconic No. 10 jersey this season as a result of his performances.

Pulisic made his first appearance of the campaign in the 3-3 draw against Southampton and could feature in Chelsea's Champions League opener against Sevilla on Tuesday.