In the first half of 2006–07 Bundesliga season, Bayern's leadership publicly stated its impatience with Dos Santos' progress. Club coach Felix Magath said: "It is clear that Julio's development does not please us, It does not make sense to keep a player at the club who does not create". This led to widespread rumours of his departure from the club; the speculation ended in December 2006, when Bayern announced they had reached a deal to send the player on loan to fellow Bundesliga side VfL Wolfsburg for the remainder of the season. Having failed to break into Wolfsburg's first team (mainly due to a major injury), he returned to Bayern in June.