Hollis-Jefferson produced just two points (1-2 FG), four rebounds, two assists and one block in 15 minutes during Wednesday's 130-109 victory over Memphis.
Hollis-Jefferson will sign with the Trail Blazers for the remainder of the season, Adrian Wojnarowski of ESPN reports.
Hollis-Jefferson will come off the bench Tuesday against the Clippers, Jamie Hudson of NBC Sports Northwest reports.
Hollis-Jefferson will start Sunday's game against the Hornets, Blazers radio host Travis Demers reports.
Hollis-Jefferson signed a second 10-day contract with Portland on Sunday.
Hollis-Jefferson will be available to play Saturday against Detroit signing a 10-day contract with the team, Jay Allen of NBC Sports Northwest Rip City Radio 620 reports.
Hollis-Jefferson officially signed a 10-day contract with the Trail Blazers on Thursday, Adrian Wojnarowski of ESPN reports.
Hollis-Jefferson intends to sign a 10-day deal with the Trail Blazers once he completes a mandatory quarantine that includes six negative COVID-19 test results, Dylan Mickanen of NBC Sports Northwest reports.
Hollis-Jefferson was waived by the Timberwolves, Shams Charania of The Athletic reports.
Hollis-Jefferson scored three points with one rebound in 12 minutes in Wednesday's preseason win at Dallas.