Since moving to North London in 2015, Son Heung-min has proven to be a success at Spurs and the North London outfit are now allegedly considering a move for one of his international teammates with South Korea.
According to the London Evening Standard, Spurs have sent scouts to monitor the performances of Hwang, who has made an impression with the Austrian club.
The 22-year-old has scored 10 goals in 32 appearances this season, while eight outings have also been made in the club's run to the semi-finals of the Europa League.
Son and Hwang are said to have become good friends off the pitch, and both players are expected to feature for their nation at this summer's World Cup.
Hwang still has over three years remaining on his contract with RB Salzburg.