Evora will miss the games in London due to a serious leg injury he suffered during a warm up in Lisbon.
Idowu claims that he would rather face Evora at the Olympics so that he can beat the best in the field.
"I wish him a speedy recovery. Nelson Evora's injury is in no way good news for me. I want to compete and win against the best," the 33-year-old tweeted.
Idowu's main rival for Olympic gold will now be France's Teddy Tamgho.