Gregg Schriefer's role in Clive Davis' estate is expected to depend on the late music mogul's will, an insider claimed.'

The legendary producer – who discovered some of music's biggest names, including Whitney Houston and Aerosmith – is survived by four children, eight grandchildren, two great-grandchildren and longtime partner Gregg Schriefer, who shared Davis' life for decades.

"Everyone adored Greg, but money has a way of changing family dynamics," a source told RadarOnline.com. "People are already asking who gets what."

Whitney Houston was among the artists Clive Davis discovered during his decades-long music career.'

An insider confided: "Greg was Clive's family in every sense except on paper.

"They built a life together, but without a marriage certificate, everything comes down to what's in the will."