Borussia Dortmund are among five Bundesliga clubs keeping tabs on Bayern Munich and Germany under-21 international attacking midfielder Paul Wanner, according to Bild's Christian Falk. Currently on loan at FC Heidenheim, the 18-year-old scored his third goal of the league campaign during the 3-1 defeat against VfB Stuttgart on Sunday, capping a performance that has also garnered interest from Bayer Leverkusen, RB Leipzig, Eintracht Frankfurt, and Stuttgart.