BERLIN, April 7 — Bayern Munich sporting director Christoph Freund guaranteed coach Thomas Tuchel would be in the dugout for Tuesday’s Champions League game at Arsenal despite yesterday’s 3-2 loss to Heidenheim.

Bayern had a two-goal lead at half-time but conceded three goals to the promoted club, which left Xabi Alonso’s Bayer Leverkusen — who won 1-0 at Union Berlin — on the cusp of a first Bundesliga title.