NBA commissioner David Stern believes the Mark Mostrov-Ron Burkle group's proposal to keep the Kings in Sacramento has legitimate support but must be increased to seriously challenge the offer from a Seattle group.

"[The Sacramento group has] strong people behind it but not quite there compared to Seatle bid," Stern said Friday.

Stern added he expects a comparable offer from the Sacramento group at some point while making clear the bid is not there yet.

Stern also does not expect expansion to the NBA any time soon.