Most of the Warriors' contract talk these days is about potential extensions for Harrison Barnes and Festus Ezeli, but 2015-16 is also a contract season for swingman Brandon Rush.[...] in the second game of the 2012-13 season, Rush tore the anterior cruciate and medial collateral ligaments in his left knee.Rush spent the summer making his body leaner, in hopes of taking some pounding off his knees.11 among active players in three-point accuracy (40.1 percent).[...] he never had his legs in his shot last season, his confidence dwindled and he shot a career-low 11.1 percent from three-point range."The thing is, he shoots like that all of the time," interim head coach Luke Walton said.Three-and-D players — guys who can make open three-pointers and also defend at a high level — are a hot commodity in the NBA.