Wiltjer will join the Blazers' summer league entry, the Spokesman-Review reports.
Wiltjer signed a contract with the Raptors' G-League affiliate, the Raptors 905, Saturday, Blake Murphy of Raptors Republic reports.
Wiltjer was cut by the Raptors on Saturday.
Wiltjer, who was dealt to the Clippers in the trade that sent Chris Paul to the Rockets, was released by Los Angeles on Saturday, Shams Charania of The Vertical reports.
Wiltjer was traded from the Rockets to the Clippers on Wednesday as part of the deal that sent Chris Paul to Houston, Adrian Wojnarowski of The Vertical reports.
Wiltjer was assigned Sunday to the D-League's Rio Grande Valley Vipers.
Wiltjer was recalled from the D-League's Rio Grande Valley Vipers on Friday.
Wiltjer was assigned Thursday to the D-League's Rio Grande Valley Vipers, Jonathan Feigen of the Houston Chronicle reports.
Wiltjer was recalled from the D-League's Rio Grande Valley Vipers on Tuesday, Jonathan Feigen of the Houston Chronicle reports.
Wiltjer was assigned Monday to the D-League's Rio Grande Valley Vipers.