Getty Los Angeles Lakers star Luka Doncic looks on before game four of the first round of the NBA playoffs. Luka Doncic sent a fair warning to the Los Angeles Lakers ahead of the biggest decision of his NBA career. Doncic is eligible to sign a lucrative extension with the Lakers beginning on Aug. 2. “This isn’t signing away to the Lakers and saying, ‘OK, you have my commitment and I’ll have some patience here,’” ESPN’s Dave McMenamin said on “NBA Today” on July 29. “It’s ‘I want to win this