Bayer Leverkusen director of sport Rudi Voller believes Bayern Munich will once again be in a league of their own this season.

Bayern won the Bundesliga by a record margin of 25 points last season, and Voller cannot see a way his or any other club can bridge that gap.

"They have never had a squad like they have now," he said. "They don't just have 11 top players, or 15, they have 22 really top players.