1258 GMT February 17, 2020
Bayern's sporting director Hasan Salihamidzic insisted the defending champion want to show nearest rival Leipzig "who is the boss" at Munich's Allianz Area, AFP reported.
Salihamidzic said the host is embracing "the role of favorites", adding that Leipzig had been "weakened a bit" by poor results.
Bayern swept to the top of the table last weekend for the first time since October and has won its last eight games.
However, Hoffenheim found plenty of space to attack in Wednesday's German Cup third-round tie as Bayern conceded two goals in the final 10 minutes as a comfortable 4-1 lead became a nervy 4-3 victory.
"Perhaps it's quite good to realize before the Leipzig game, that things won't simply work of their own accord," admitted Bayern midfielder Joshua Kimmich.
Head coach Hansi Flick called the narrow win a "wakeup call."
Leipzig, which spent more than a month over Christmas top of the table, has had cold water poured on its title aspirations in recent weeks.
A shock 2-0 loss at Eintracht Frankfurt a fortnight ago cost it a four-point lead. Then Bayern went a point ahead at the top after Leipzig's 2-2 draw at home to Borussia Moenchengladbach last Saturday.
Another loss at Frankfurt in midweek, when top-scoring striker Timo Werner and playmaker Emil Forsberg both started on the bench, saw Leipzig dumped out of the German Cup.
"Leipzig will want to show a reaction," Kimmich said.
Sunday's clash will also see the league's leading scorer Robert Lewandowski, who has 22 goals in 20 games, go head-to-head with his nearest rival Werner, who is on 20.
Before Bayern and Leipzig slug it out, third-placed Borussia Dortmund could go top on Saturday with a win at Bayer Leverkusen.
Erling Braut Haaland, 19, has a record eight goals in his first four games for Dortmund, which was knocked out of the German Cup in midweek when it went down 3-2 at Werder Bremen.
Sports director Michael Zorc slammed the team for playing "listlessly, comfortably and slowly."
Haaland has yet to play a full 90 minutes for Dortmund as he works his way back to full fitness after a knee injury in December.