Robben missed the final three months of last season with a groin problem.
Mats Hummels says returning to Dortmund so soon after his return to Bayern Munich felt "very strange" and is confident his performances will improve.
Michael Ballack believes former club Bayer Leverkusen are back on track ahead of the start of the Bundesliga season.
Bayern Munich have tightened security measures ahead of the 2016-17 Bundesliga campaign which kicks off with a home game against Werder Bremen.
Pierre-Emerick Aubameyang insists that should a time come when he leaves Borussia Dortmund he will not force through a transfer.
Former Bayern Munich midfielder Michael Ballack believes Mario Gotze is a rare talent in the Bundesliga.