The San Francisco 49ers do not expect to have receiver Brandon Aiyuk on the field for the season-opening game against the Seattle Seahawks on Sept. 7.

The receiver position remains uncertain in the case of the San Francisco 49ers with Week 1 drawing closer. Both star wide receivers Brandon Aiyuk and Jauan Jennings are sidelined through injury, and in each case,

It's becoming more and more likely that the San Francisco 49ers could be without one of their top playmakers when the regular season gets underway. During an appearance on KNBR's "The Murph & Markus Show" on Thursday,