Right-back: Joshua Kimmich (Bayern Munich)
Kimmich's versatility makes it easy to forget he's still only 24 - such is the precocious talent we're dealing with here.
Barring the goalkeeper and the center-forward, the German has been deployed in every other position in his short career so far and has excelled in each of them.
But it's the right-back position where he's shone the most with 26 assists in Bundesliga in the last two seasons - more than anyone else in that period.
Center-back: Manuel Akanji (Borussia Dortmund)
The Swiss star has proved to be a palliative to Dortmund's long-standing defensive woes since arriving at the Signal Iduna Park in 2018.
Strong, confident aggressive and athletically gifted, Akanji has brought a sense of robustness to the backline which turned Der BVB into a mean outfit last season.
He averaged 3.5 clearances a game and also maintained a 93% passing accuracy. Akanji's partnership with the homecoming Hummels can beef up the defense further.
Center-back: Benjamin Pavard (Bayern Munich)
Mats Hummels may have had a fine season last time, but the meteoric rise of Pavard is just too hard to ignore. The young Frenchman carried on from his 2018 World Cup heroics for a brilliant campaign personally with Stuttgart, which eventually landed him a move to Bayern.
His ability to play as a center-back, right-back, and even a defensive midfielder is set to offer great tactical flexibility to Kovac this season, and as we witnessed in Russia, is capable of pulling a rabbit out of his hat with wonderful strikes.
Left-back: David Alaba (Bayern Munich)
Now in his ninth season with the Bavarian side, Alaba has long established himself as one of the best left-backs in the world.
He's a strong creative force down the left-wing while his ability from the Deadball is second to none. The Austrian scored and assisted thrice each last season, a stark reminder of his attacking prowess.