Keenan Allen may be feeling deja vu in 49ers debut against Cowboys
San Francisco 49ers at Dallas Cowboys: Playbook For the 49ers’ newest receiver, Sunday just might feel like Groundhog Day. The NFL trade deadline saw its shadow, and Keenan Allen has two straight weeks of football against the Cowboys. As Allen hurriedly got up to speed this week on Kyle Shanahan’s playbook, he at least didn’t...