There's lots of speculation Dominik Szoboszlai will soon leave Red Bull Salzburg.

Jesse Marsch recently told @GrantWahl's Fútbol podcast he expects him to leave in January.

The player reportedly has a €25m release clause. But would that be good business for RBS?

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Yes! It may seem cheap, but it’s their business model.

They won't stand in the way of players wanting to leave by demanding exorbitant fees, but they'll still sell them on for a sizeable profit that gives them a huge ROI.

Here’s an overview of their most expensive sales

1) Naby Keïta – The record transfer from an Austrian club by some distance at €29.75m, Keïta left RBS for RB Leipzig in 2016, before joining Liverpool two years later.

Arrival: Istres for €1.5m
Departure: RB Leipzig for €29.75m
Profit margin: €28.25m
ROI: 1983.3%

2) Sadio Mané – A European and EPL champion with Liverpool, Mané broke through at RBS before moving to Southampton in 2014 and is now regarded as one of the world's best players.

Arrival: Metz for €4m
Departure: Southampton for €23m
Profit margin: €19m
ROI: 575%

3) Erling Haaland – A revelation when he burst on to the scene in the Champions League last term, the striker only stayed for a year before leaving to join Borussia Dortmund.

Arrival: Molde for €8m
Departure: Borussia Dortmund for €20m
Profit margin: €12m
ROI: 250%

4) Amadou Haidara – A tough-tackler with an aerial presence and an eye for a defence-splitting pass, Haidara took the well-trodden path from Salzburg to Leipzig in 2019.

Arrival: JMG Bamako for €0.8m
Departure: RB Leipzig for €19m
Profit margin: €18.2m
ROI: 2375%

5) Duje Ćaleta-Car – The most expensive defender sold by an club. He impressed Marseille in the Europa League in 2018 and joined the French club a few months later.

Arrival: HNK Sibenik for €0.05m
Departure: Marseille for €19m
Profit margin: €18.95m
ROI: 38000%

6) Munas Dabbur – The Israeli won everything on offer and topped the Austrian scoring charts in two successive seasons before leaving for the sunnier climes of Spain.

Arrival: Grasshoppers for €5m
Departure: Sevilla for €17m
Profit margin: €12m
ROI: 340%

7) Xaver Schlager – Once saw him buying sweets at a Klagenfurt service station. Beyond that, a gifted attacking midfielder who left for VfL Wolfsburg in Germany in 2019.

Arrival: Promoted from academy
Departure: Wolfsburg for €15m
Profit margin: €15m
ROI: N/A

8) Jonathan Soriano – One of the few strikers to hit 30 goals in an Austrian BL season, Soriano arrived from Barcelona B in 2012 and moved to China five years later.

Arrival: Barcelona B for €0.5m
Departure: BJ Sinobo Guoan for €15m
Profit margin: €14.5m
ROI: 3000%

9) Diadié Samassékou – A combative defensive midfielder, the Malian arrived in Salzburg in 2015 - a year before his countryman Amadou Haidara made the same move.

Arrival: AS Real Bamako for unknown fee
Departure: Hoffenheim for €14m
Profit margin: Unknown
ROI: N/A

10) Stefan Lainer – The full-back was a key figure under coach Marco Rose, before following his manager to Borussia Mönchengladbach in the German Bundesliga.

Arrival: SV Ried for €0.2m
Departure: Borussia Mönchengladbach for €12.5m
Profit margin: €12.3m
ROI: 6250%

There are more examples too.

Dayot Upamecano was bought from Valenciennes for €2.2m and sold to Leipzig for €10 (Profit margin: €7.8m/ROI: 455%).

Takumi Minamino signed from Cerezo Osaka for €0.8m and moved to Liverpool for €8.5m (Profit margin: €7.7m/ROI: 1062%).

So back to our Hungarian 'Wunderkind', who moved to the Salzburg academy from Videoton for €0.5m in 2017.

If he's sold for €25m, the profit margin would be €24.5m and the return on investment would be 5000%.

That sounds like pretty good business to us!