Eintracht beat Bayern 5-1 when they met in the league in November, prompting Bayern to fire coach Niko Kovac and appoint Hansi Flick as his successor. Frankfurt, then with Kovac as its coach, beat Bayern 3-1 in the 2018 final.
Bayern is aiming for trophies in three competitions this season. It leads the Bundesliga by four points and is heavy favorite for a spot in the Champions League quarterfinals after beating Chelsea 3-0 in the first leg of their last-16 fixture.
Saarbrücken is the first fourth-tier team ever to reach the German Cup semifinals. It had to win a regional cup competition even to qualify and has since knocked out four teams from higher leagues. Saarbrücken was a semifinalist in 1985 but played in West Germany's second-level league at that time.
The semifinals will be played April 21 and 22, with the exact times and dates to be confirmed. The final is May 23 in Berlin.
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