Reed cleared waivers and elected free agency Friday but was immediately re-signed by the Giants on a minor-league deal, Alex Pavlovic of NBC Sports Bay Area reports.
Reed was designated for assignment by the Giants on Tuesday, Maria I. Guardado of MLB.com reports.
Reed is not in the lineup Monday against the Dodgers, Andrew Baggarly of The Athletic reports.
Reed is not in the lineup Saturday against San Diego.
Reed will start in right field and bat seventh Thursday against the Padres, Andrew Baggarly of The Athletic reports.
Manager Bruce Bochy informed Reed on Tuesday that he would be included on the Giants' Opening Day roster, John Shea of the San Francisco Chronicle reports.
Reed has been traded to the San Francisco Giants for outfielder John Andreoli, the Minneapolis Star Tribune reports.
Reed (back) will start in right field and hit second Saturday in the Twins' Grapefruit League game against the Pirates, LaVelle E. Neal III of the Minneapolis Star Tribune reports.
Reed (back) was claimed off waivers by the Twins on Wednesday, Brandon Warne of Zone Coverage reports.
Reed was placed on the 60-day disabled list Sunday with a left lower-back strain.