Eurosport - Sun, 27 Jun 11:25:00 2010
Leverkusen, Champions League finalists in 2002, finished fourth in the Bundesliga last season despite topping the table for two thirds of the campaign but Voller is now optimistic about his side's chances of glory this term.
"We were just lacking something and I think that Michael is that," he told the Sonntags-Express newspaper.
"Ballack should be a reference point in the team. He is the ultimate lead figure."