The 23 year old has scored an impressive 43 goals in 86 league games at FC Seoul.
"Yes, we are looking at him, but there is no deal yet," Bruce admitted after the 1-0 defeat to Chelsea on Sunday.
"My general manager is out there at the moment, having a look. He played yesterday (Saturday).
"It is a possibility and there might be something happening, but I am very, very pleased with what we have got, and what we have done."