The remark was made in January 2009 when he was playing for Tottenham and headed a late chance wide in a draw against Portsmouth.
"My missus could have scored that," said Redknapp. Six months later, the striker moved to Sunderland.
"Harry's a well-liked guy and a lot of people listen to what he's got to say," said Bent. "When I first left Spurs, it was on my mind to show people but after the first season when I scored a lot of goals at Sunderland I just put it to bed. Whatever he said, it's over now."