Nero told the Pittsburgh Post-Gazette on Wednesday that he was "confident we'll come to an agreement" on Kang, the power-hitting 27-year-old who reportedly is seeking a contract worth $5 million annually.
Kang hit 40 homers and drove in 117 runs in 117 games while batting .356 with a 1.198 OPS for the Nexen Heroes in the Korean Baseball Organization last year.
It's still unclear where Kang will fit in with Pittsburgh if the two sides complete a deal. He could back up Josh Harrison at third base, Jordy Mercer at shortstop and Neil Walker at second, and he could be a part of the mix at first base.
Adam Berry is a reporter for MLB.com. Follow him on Twitter at @adamdberry. This story was not subject to the approval of Major League Baseball or its clubs.