Reed signed a G League contract and was acquired by Salt Lake City, who own his returning player rights.
Reed agreed to terms on a deal with Olympiacos, Sportando.com reports.
Reed provided 13 points (5-6 FG, 3-6 FT), four rebounds and one assist across 16 minutes during the Jazz's 87-78 loss to the Rockets in a Las Vegas Summer League game Thursday.
Reed was waived from Salt Lake City due to a season-ending shoulder injury.
Reed sustained a season-ending shoulder injury Wednesday and won't play against in 2018-19.
Reed (back) tallied 21 points (9-11 FG, 3-5 FT), 10 rebounds, three assists and one steal in the 112-100 loss to the Blue.
Reed (back) did not play in Friday's win over Austin.
Reed compiled 24 points, 11 rebounds and a blocked shot in the loss to the Skyforce on Monday.
Reed was selected with the first overall pick in Saturday's 2018 G-League Draft, Shams Charania of The Athletic reports.
Reed (suspension) will be waived by the Bulls, Vincent Goodwill of NBC Sports Chicago reports.