The Golden State Warriors and forward Jonathan Kuminga will not reach a new deal before Monday's 6 p.m. ET deadline for rookie contract extensions, sources told ESPN.
The Warriors and Kuminga's representative, Aaron Turner of Verus Basketball, have been in discussions over the past several months but talks never gained traction.
Kuminga believes in his talent and ability to progress into a star in the league, and the Warriors have seen statistics that measure his growth similarly to the early years of the Clippers' Kawhi Leonard, Indiana's Pascal Siakam and Boston's Jaylen Brown.
The Warriors, however, prefer to view Kuminga's growth this coming season. The fit between Kuminga and coach Steve Kerr is also something Warriors officials are monitoring, sources said.