Brandon Aiyuk has spent weeks trying to control the message . Mark Schlereth is not buying the victim act. The former NFL offensive lineman and three-time Super Bowl champion delivered a blistering message to the San Francisco 49ers receiver after Aiyuk’s latest social media outburst directed at the franchise. “Here’s a little piece of advice for you,” Schlereth said , according to a clip shared on X by Coach Yac. “You are exactly where you are because of the sh*tty decisions that you’ve made.