Bielefeld will come into the match having suffered a big four-goal to nil defeat against VFL Wolfsburg that leaves them Perilously close to the relegation zone.
The match on Sunday afternoon is vital for Bielefeld as they push to try and stay in the Bundesliga. At the moment they are in a three-horse race to avoid relegation with Hertha Berlin who are level on points and VFB Stuttgart who are just one point ahead.
Meanwhile, it's been a mixed week for Bayern. They managed a narrow one goal to nil win against FC Augsburg last weekend to extend their gap at the top of the table from Borussia Dortmund to nine points.
However, they suffered a shock on Tuesday night as they crashed out of the champions league having drawn one all at home to Villarreal CF who went through having won the first leg. With Bayern also out of the DFB Pokal, it means winning the Bundesliga is of paramount importance.
Bielefeld head coach Frank Kramer has got several key players missing ahead of the match on Sunday. Club captain Fabian Klos is definitely set to miss out as he continues to recover from a fractured skull, while Florian Krüger, Sebastian Vasiliadis, and Cédric Brunner are all also doubts.
Meanwhile, Bayern head coach Julian Nagelsmann has also got several concerns ahead of the match on Sunday. Corentin Tolisso is definitely set to miss out with a hamstring injury, while Nikolas Süle, Bouna Sarr, and Eric Maxim Choupo-Moting are also set to miss out.
Arminia Bielefeld: Ortega, de Medina, Pieper, Nilsson, Laursen, Prietl, Kunze, Wimmer, Schöpf, Okugawa, Serra
Bayern Munich: Neuer, Pavard, Upamecano, Hernandez, Davies Kimmich, Musiala, Gnabry, Müller, Coman, Lewandowski
Players to watch
Bielefeld have had a difficult season and as a result, find themselves in a fight to stay in the Bundesliga however they still have hope of staying up thanks in so small part to attacking midfielder Masaya Okugawa.
Okugawa is the club's top scorer this season with eight goals and has played in every single match so far this season except one. Bielefeld will be hoping Okugawa can find top form and help them secure a vital win on Sunday.
Despite Bayern's mixed season so far Robert Lewandowski has continued to show his goal-scoring prowess, he is also currently the center of transfer speculation as his contract expires this summer and Bayern have yet to renew it.
Lewandowski has scored an impressive 32 goals in just 29 matches making him the Bundesliga's top scorer 12 goals clear of Patric Schick in second. Lewandowski will be hoping to add to his tally at the weekend.
Last time out
The last time these two faced each other Bayern managed to secure a narrow one goal to nil win.
The match started with Bayern on the front foot and they created their first chance in the fifth minute. Leroy Sané beat a couple of defenders before passing a ball to Thomas Müller whose left-footed shot from inside the box was saved.
Bayern continued to press but failed to make any clear-cut chances. Their best chance of the first half came in the 40th minute. Benjamin Pavard did brilliant work down the right-hand side of the pitch before sliding a ball to Kingsley Coman however his shot from outside the box was straight at the Bielefield goalkeeper.
Bielefeld also had a great chance to take the lead in the 44th minute. They managed to win a corner and the ball fell to Vasiliadis on the edge of the box however his shot from outside the box was too high and blazed over the Bayern goal.
Bayern started the second half the way they finished the first half putting Bielefeld under immense pressure. Sané went close twice in five minutes however his efforts were rebuffed by the Bielefeld defence. Lewandowski also had a golden opportunity but he also missed the target.
However, after punching and punching Bayern finally broke down the Bielefeld wall in the 70th minute thanks to Sané. Thomas Müller did brilliantly in midfield before passing the ball to Sané who unleashed a thunderbolt of a strike from outside the box giving the Bielefeld goalkeeper no chance.
How to watch
Fans in the UK can watch the match on Sky Sports Football from 2 pm on Sunday while fans in the US can watch the match on ESPN+.