The Los Angeles Rams' personnel situation on offense remains in flux ahead of a pivotal Week 17 matchup against the Arizona Cardinals.

On Tuesday, the Rams placed leading receiver Cooper Kupp on the reserve/COVID-19 list. The team did not disclose whether he tested positive or was deemed a close contact to someone who did.

Kupp must remain on the list for 10 days if he tested positive or five days if he is considered a high-risk close contact of someone who did. If Kupp is not considered a high-risk contact then there is no stringent timetable attached to his return.

Depending on Kupp's situation, it remains possible that he could be activated for Sunday's regular-season finale.

Also Tuesday, the Rams officially signed quarterback Blake Bortles from the Denver Broncos practice squad in a move coach Sean McVay said to expect after announcing Monday that quarterback Jared Goff will not play against the Cardinals after undergoing thumb surgery.