Manchester City ended an indifferent pre-season campaign with a heavy 4-2 defeat away to Stuttgart on Saturday.
Stuttgart have announced two new signings as they look to avoid a second consecutive relegation battle.
Stuttgart came from behind to beat Paderborn 2-1 and secure their place in the Bundesliga next season.
Liverpool give U21s more game time than Premier League rivals but top flight lags behind Europe.
Stuttgart climbed off the foot of the Bundesliga and leap-frogged Hamburg in the standings with a 2-1 win.
Stuttgart picked up a crucial 2-0 win over Mainz on Saturday evening to keep their survival hopes alive.