Veteran batsman Usman Khawaja said he has "nothing to prove to anyone" after being snubbed from the Australian side during the Ashes but was adamant his major goal "always will be" playing international cricket.

Speaking on Wednesday at his orientation for the Big Bash season, Khawaja said he would keep his "head down" and work on his game after the experience.

Usman Khawaja lost his place during the Ashes. Credit:AP

"Things can change very quickly, both good and bad," Khawaja said. "If you look too far ahead the game comes back and bites you in the backside."

Khawaja was dumped by selectors for the fourth Ashes Test in September after a run of disappointing performances, putting into question the future of the 32-year-old's international career.