Kagawa said: "It is inspiring and exciting to play alongside such world class players.
"Wayne can do everything to the highest standard. He has everything a football player would need: team spirit, hard work, switching between attack and defence.
"You don't see such players very often. He plays for the team, plus he can score and assist.
"There is so much I can learn from him and I enjoy playing with him.
"Robin, of course, made the difference with his goals. He's wonderful."