"We want to win the game, that would mean we would top the group, and we play who we play in the next round", Southgate added.
"I feel that the players we've picked are free, but they've got a point to prove", Southgate said.
The leading goal scorers at the tournament so far are Harry Kane with five goals for England. The Belgium coach is taking this game very seriously, but he intends to make the most of his team's early qualification by giving a few starters a breather and allowing his fringe players more time on the pitch.
England and Belgium are level on points and also boast identical goal difference after two matches, meaning the outcome of Thursday's game will determine who finishes as the victor of Group G.
"It's like a test for us, if you can keep a player like Harry Kane form scoring then you're keeping your focus and doing your defensive work well", he said.
World champions Germany finished bottom of Group E following their 2-0 defeat against South Korea on Wednesday, ruling out the prospect of a potential quarterfinal clash with England in Kazan, while Argentina required an 86th minute victor against Nigeria on Tuesday to avoid being knocked out. We'll study that and relish the challenge of playing against him.
Each morning during the tournament we will bring you an overview of what is coming up. "But I am sure we can get that right". Marcus Rashford is expected to take Raheem Sterling's place and Dele Alli is available again after training for the past two days.
The group stage draws to a close on Thursday with one of its most eagerly anticipated games, the calendar serving up a delicious showdown between England and Belgium.
"We are in the fortunate position, we do not have to risk him but if he is ready, we will put him in".
Both teams would like to iron out these glitches before they get into the really serious business against much stronger sides. I go back to the fact we're trying to develop a winning mentality and I can't imagine a situation where I talk to the players about anything else.
"We have no idea who, when or where we will play in the next round, but we're pleased we're in the next round".