Ahead of the first Bundesliga Klassiker of the season, bundesliga.com is giving you the chance to vote for your Bayern Munich-Borussia Dortmund dream team. All 11 positions are up for grabs, and it's your votes that will determine the final combined Bayern-Dortmund XI, which we will present to you ahead of Saturday's big match.

Here are the four candidates for the first centre-back position: Marc Bartra, Mats Hummels, Ömer Toprak and Dan-Axel Zagadou. Cast your votes in the poll below!

Vote for your combined XI below!

Marc Bartra

In need of a new challenge after coming through the youth ranks at Barcelona, Bartra joined Dortmund in the summer of 2016. Stylish on the ball and handy in the air, the Spaniard soon became an important component of a side that went unbeaten at home last season and won the DFB Cup. Dortmund seemed the perfect match for the 26-year-old as he fell in love with the club and the fans loved him right back.

Watch: Bartra the battler

Mats Hummels

A technically-gifted and elegant defender, Hummels left Bayern Munich in January 2008 in search of regular first-team football. He got that and more at Borussia Dortmund, forming a rock-solid partnership with Neven Subotic and winning back-to-back Bundesliga titles in 2011 and 2012. The 28-year-old also reached the 2013 UEFA Champions League final and showcased his aerial threat with two goals in Brazil as Germany won the 2014 FIFA World Cup. Named Dortmund skipper in August 2014, he claimed a third Bundesliga title after returning to Bayern last summer.

Ömer Toprak

Toprak caught the eye early in his career by helping Germany win the European under-19 Championship in 2008. He then earned promotion to the Bundesliga with Freiburg a year later before switching to Bayer Leverkusen in 2011. A strong defender with good concentration levels, he featured regularly in the Champions League in six years with Leverkusen. The 28-year-old Turkey international moved to Dortmund this year in the hope of adding to his medal collection.  

Watch: Toprak featured in the top 10 goalline clearances of 2016/17

Dan-Axel Zagadou

Zagadou never played for Paris Saint-Germain but he has seized his chance with Dortmund. The France under-18 captain moved to Germany this summer and sporting director Michael Zorc promised that the new signing would immediately be involved with the first team. A quick and towering centre back, the 18-year-old has impressed at left-back this season – helping Dortmund to the top of the table while filling in for injured captain Marcel Schmelzer.

Watch: Zagadou the September Rookie of the Month

Click here for a look at the other ten positions.