The 40-year-old has enjoyed a flying start to life in the Bundesliga since guiding Elversberg to a shock promotion last season, with the newly promoted side taking two wins and suffering only a narrow defeat to Bayern Munich so far this term. Asked in a wide-ranging interview with Bild whether he had a dream job, Wagner needed little time to answer.
"Now I have to be careful what I say," he began, laughing. "I've been a fan of Borussia Dortmund since the 1995-96 season. But right now, I find it hard to imagine myself one day standing on the touchline there."
Wagner was quick to stress his focus remains firmly on his current job rather than any move elsewhere. "I'm happy at SV Elversberg, and glad that I get to be a Bundesliga coach - because I love my job," he said.
Elversberg's rise under Wagner has been one of the stories of the season so far, with the small Saarland club - representing a town of little more than 7,000 residents - shocking Bayer Leverkusen 3-2 on the opening weekend before following up with a 4-3 win over Borussia Mönchengladbach. Their run came to an end against Bayern at the weekend, but the manner of the performance did little to dent the growing reputation Wagner has built for himself in a short space of time.
According to Transfermarkt, Wagner is contracted to Elversberg until the summer of 2028, while Niko Kovac remains in position as Dortmund's head coach for now. Any move to Signal Iduna Park, then, remains firmly in the realm of boyhood dreams rather than an active possibility, at least for the time being.
Wagner took charge of Elversberg last year, succeeding Horst Steffen, who left to join Werder Bremen, having previously worked with Hoffenheim's second team.
He guided the Saarland club to a second-placed finish in the 2. Bundesliga to secure their first-ever promotion to the top flight, a rise that has continued into this season despite widespread predictions that Elversberg would struggle to compete at Bundesliga level.