Live updates from the BayArena, kick-off 2.30pm (BST)
Werner’s transfer U-turn in keeping with his bumpy rise to top
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Bayer Leverkusen: Hradecky, Tapsoba, S Bender, Dragovic, Amiri, Aranguiz, Baumgartlinger, Bailey, Bellarabi, Alario, Diaby.Subs: Ozcan, Tah, Paulinho, Demirbay, Wendell, Weiser, Palacios, Wirtz, Volland.
Bayern Munich: Neuer, Pavard, Boateng, Alaba, Davies, Kimmich, Goretzka, Gnabry, Muller, Coman, Lewandowski.Subs: Ulreich, Odriozola, Thiago, Martinez, Perisic, Hernandez, Singh, Zirkzee.
A big blow for Leverkusen, as Kai Havertz misses out with a muscle injury.