The 19-year-old joined us from Grasshoppers Zurich and has taken little more than six months to become a first team regular and receive his call into the senior Swiss squad.
There is a chance he could cap it all by making his full Switzerland debut against no less than France in a World Cup qualifier in the Stade de France on Saturday. They then face Cyprus at home on Wednesday.
"I couldn't have dreamed about this, not really," smiled Reto at Spurs Lodge. "I have to say things have gone better than I hoped.
"The change from Grasshoppers to Spurs has worked for me and I'm happy to have made the change. It's tough but I have the feeling I'm learning every day and that's the most important thing for the developoment of any young player.
"I'm now in the Swiss first team squad, we also have the Under-21 championship so it's a big year. I have a lot of possibilities.
"I'm 20 next summer and the World Cup would be a dream, although it's not good to look that far ahead. We have a very tough group to start. I'm just concentrating on joining the squad and seeing what happens in these two games."
Reto was looking forward to stating his case to Swiss boss Koebi Kuhn after joining up with the squad.
"I must show what I can do in training," he added. "It's a new team, I don't know that many players although I know a few of the younger players - Vonlanthen, Senderos, Cabanas, Spycher. I'm sure it will be easy for me to integrate.
"I've played with three or four but many are new and it's important for me to integrate as soon as possible."
Reto Ziegler admits he couldn't have dreamed of the way his career has accelerated since his switch to Spurs in August.