Singer Kim Greem's exclusive contract with Nextar Entertainment is set to expire in April.
Nextar Entertainment is an entertainment agency lead by renown composer Cho Young Soo. The singer signed up with the agency in 2011.
Music industry officials suspect the singer may not resign with the agency. Normally there's a comment from the agency and singer, but that hasn't happened so far.
Kim Greem rose through prominence via Superstar K2 in 2011 becoming one of the Top 11 contestants.
The singer debuted with "Fly High" in April 2011.