Melbourne United chief executive Vince Crivelli says his club risked being restricted to two imports if they went any higher in the bidding war for their former star Casper Ware.

The Sydney Kings shocked the NBL on Thursday night when they signed Ware to a two-year deal (one year plus a player and team option), which sees the former NBA point guard and Melbourne United championship winner join Andrew Bogut in Sydney.

Most seasons, Melbourne don't sign their imports until later in the winter as they focus on signing local players and monitor the talent in Europe and the NBA Summer League.

But this year the Kings were coming hard for Ware while expansion club South East Melbourne Phoenix were also closely tracking him.