United Group's broadcasters were previously critical of President Aleksandar Vucic.
Recent deal raises questions about the future of independent journalism in Serbia.
Media freedom advocates express alarm over the implications of the agreement.
Strategic implications in focus: Concerns grow over potential shifts in media independence following a deal with a state-owned telecommunications company.
United Group's broadcasters were previously critical of President Aleksandar Vucic.
Recent deal raises questions about the future of independent journalism in Serbia.
Media freedom advocates express alarm over the implications of the agreement.