The Cameroon international moves to British Columbia in exchange for the new U.S. international.
The Columbus Crew have acquired Kekuta Manneh from the Vancouver Whitecaps in exchange for Tony Tchani and $300,000 in allocation money.
Manneh, 22, is in the final year of his contract and if he re-signs with the Crew, Vancouver will also receive Columbus' natural first round MLS SuperDraft selection in the immediately following draft.
Both Tchani and Manneh had fallen out of favor with their clubs in recent months. The development of teenage sensation Alphonso Davies made Manneh more expendable for Vancouver, while Artur has been starting next to Wil Trapp in the center of the Crew midfield in recent matches.