The Foxes meet Arsenal in the Cup tonight.
Rodgers said: "I will make changes, for sure.
"[We have to think about] the quick turnaround in pre-season, the demands we have as a squad this season, and also having to get players up to speed physically.
"I also want to have a chance to have a look at some young players.
"We've got a lot of competitions we're in, and we want to do well in them, and for that, it means I'll have to use the squad.
"[But] we want to do well in this competition, we want to be really competitive in it, the same idea as last season."