The Belgium international is to spend the entire 2012/13 campaign in the Bundesliga picking up valuable experience.
The 21-year-old Belgium international is, however, aware that he faces fierce competition for places at Chelsea and that he may be forced to head back out on loan next season.
"I am definitely going to spend pre-season with Chelsea. After that, we will see what happens," De Bruyne told Kreiszeitung Syke.
"I know it will be very tough for me to accept being just a substitute. I know I would become extremely unhappy.
"I want to play every match and if that doesn't happen at Chelsea, then perhaps I will have to find a club that are a bit lower in standard."