49ers wide receiver Kendrick Bourne is back on the reserve/COVID-19 list.
Bourne was initially placed on the list last week after a positive test, but came off on Friday after a pair of negative tests. After the first negative, the NFL said Bourne had a confirmed positive and that 101 of 104 players to test negative after a positive result subsequently tested positive again.
It’s not clear what’s led to Bourne going back on the list.
Williams and Aiyuk were also returned to the active roster on Friday.