The Houston Rockets are telling other teams that they intend to trade disgruntled center Omer Asik by Dec. 19, according to sources familiar with the team's plans. Sources told ESPN.com that the Rockets began calling potential trade partners Friday to let them know they intend to deal Asik between Dec. 15 and Dec. 19. The significance of such a specific window is two-fold. Dec. 15 is the first day players who signed new contracts in the offseason can be plugged into trades, and Dec. 19 is the last day any player acquired by Houston in an Asik deal can be repackaged with other players before the league's Feb. 20 trade deadline. Read more http://espn.go.com/nba/story/_/id/10090433/houston-rockets-put-omer-asik-trade-block