Jamal Musiala starred and Bayern Munich ended its four-game winless run by beating Bayer Leverkusen 4-0 as the Bundesliga returned from the international break on Friday. Thomas Müller set up Musiala to score in the 17th, and Musiala was involved again when he set up Sadio Mané to end his six-game scoring drought in the 39th. Bayern’s players kept playing …