Former Bayern Munich chief executive Karl-Heinz Rummenigge has called on the club to be more discreet in their prolonged search for a new coach. Baver Leverkusen’s Xabi Alonso, Germany’s Julian Nagelsmann and Austria’s Ralf Rangnick have all turned down the chance to succeed Thomas Tuchel, who leaves in June after Bayern surrendered the Bundesliga title to Leverkusen for the first time in 12 years. Former Bayern player Rummenigge, who stepped down as chief executive in 2021, told Spanish newspaper AS before Wednesday’s Champions League semi-final second leg at Real Madrid that leaks to the med…