The former Wycombe Wanderers winger, 20, has fired nine goals already for City's development team this season.
Cardiff U21 manager Kevin Cooper told the Western Mail: "Kadeem came back with a fantastic attitude and has been doing great. He has a willingness to learn and wants to get better.
"We know what Kadeem's capabilities are. He has pace, he has tricks. Now we are working with him to become a little cuter and more clever in possession.
"He is a work in progress and we are working with him, showing him how he can affect a game.
"He is a real prospect for us and so far he is delivering."
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