Stiller was absolutely sensational for Stuttgart throughout the 2024-25 season. Indeed, the central midfielder was pivotal in Die Schwaben's DFB-Pokal triumph at the end of the season, breaking the club's 18-year trophyless streak. His displays caught the eye of Liverpool, who were keen on signing Stiller to bolster their midfield. Real Madrid were also heavily linked with the 24-year-old, while there were also reports that claimed Manchester United were also interested. However, he stayed put in Bundesliga for another season. It is expected that he will move to a top club next summer, should he continue his impressive form.
Stiller explained why he didn't consider leaving Stuttgart. "I'm a regular and leading player here. The most important thing for my development is that I get my minutes – especially in a World Cup year. I definitely didn't want to jeopardise the World Cup," the Munich-born midfielder added.