While the source seems unreliable, the news is delicious. “The source” states that Harrison Ford, prior to accepting the role as Indiana Jones in Indy IV was offered to wear the black vest of Han Solo in a Star Wars spinoff:
George wanted Harrison to play Indy but cleverly sounded him out about playing Han Solo instead. Harrison was horrified. After that he was delighted to be playing Indy again. He told George he just couldn’t face being stuck in a spaceship with Chewbacca again.