TOP prospect Ben Simmons has declared that he will enter the next NBA rookie draft, where he is expected to be the No. 1 selection.

The 6-10 Australian made waves in his only season with the LSU Tigers and told ESPN on Monday that he will make himself available in the coming NBA draft.

"I'm making it official," Simmons was quoted as saying by ESPN.

The LSU freshman averaged 19.2 points, 11.8 rebounds and 4.8 assists per game in the US NCAA but the Tigers finished a dismal 19-14 and failed to make the NCAA tournament.