The Japan international has accused the prolific striker of being too selfish on the pitch, and feels the Pole would score even more if he involved his teammates more often.
The prolific striker has netted 20 goals in 33 Bundesliga appearances, as well as setting up six more, but the Japanese midfielder believes that the Poland international would be even more efficient if he made better use of the players surrounding him.
"Lewandowski's game is purely focused on trying to score himself, rather than playing together with his teammates," the Japan international stated to Nikkei. "He never looks around him for players who are in a better position than him. That's why I hardly get the ball from him. There's nothing you can do about that, though. That's simply the type of player he is.
"He has scored 20 times, and I have 13 goals to my name. The only difference is that he doesn't cooperate with other team members. I am convinced that he would score more goals if he made better use of me on the pitch."
Kagawa is continually being linked with a move to England, and his comments on Lewandowski seem to be another indication that he's heading for the Dortmund exit.
Meanwhile, it was announced that promising youngster Julian Koch has signed a new contract with BVB until the summer of 2014.
The 21-year-old impressed on loan at Duisburg last term, but a knee injury prevented him from making an impact at Dortmund in the 2011-12 campaign.
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