Former Australia captain Michael Clarke has said fans of the national side "can't trust what's real" and has called for the investigation into the 2018 Australia ball-tampering scandal to be reopened.

Clarke's former international team-mate Usman Khawaja claimed the entire team knew about the use of sandpaper to alter the condition of the ball in the third Test against South Africa.

The incident led to bans for captain Steve Smith, vice-captain David Warner and fellow batter Cameron Bancroft, but a Cricket Australia investigation found the national side's bowling attack were unaware of the ball-tampering.

Cricket Australia CEO Todd Greenberg, speaking before Clarke's intervention, said he does not see "any compelling reason" to reopen the investigation.

However Clarke said Australian fans "have not moved on" and that the investigation process needs to be restaged.

"They can't trust what's real.…