Is Antonio Brown signaling his future or is he just messing with the NFL-crazy public? The Pittsburgh Steelers wide receiver unfollowed his own team on Instagram on Wednesday and started following the San Francisco 49ers, according to Yahoo! Sports. Brown on Wednesday also posted a picture of Jerry Rice, the legendary 49ers wide receiver, on his Instagram story, according to San Francisco radio station KNBR. Brown’s curious social-media activity immediately followed a highly anticipated end-of-season press conference in which Steelers head coach Mike Tomlin refused to deny allegations Brown quit on the Steelers Sunday during their Week 17 w... NESN.com