Guardiola will come face to face with Bellingham as his side take on Real Madrid in the Champions League.
Bellingham will be in the starting lineup for Los Blancos in the quarter final first leg on Tuesday.
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"What makes the difference is what he has in his head," Guardiola said ahead of the quarter-final.
"He's having a brilliant season. (He is) very young. He has an impressive career ahead."
Midfielder Rodri added: We know Jude because we have faced Dortmund - he is so powerful and strong, has the ability to arrive at the second line and control the game.
"But I don't like focusing on one player - they have enormous potential in all the lines, and we have to adapt to that."