Razak played in City's Carling Cup ties against Birmingham and Wolves earlier this season.
He told City's website: "I'm enjoying it, I like the way that Brighton play their football.
"The Premier League is different. When you play in the Championship, you feel like you have to learn how to attack your man more.
"It can be difficult to show what you can do out on the pitch. But my first game was good for me."