SANTA CLARA — Red and white 49ers T-shirts hung like normal inside Brandon Aiyuk’s locker. Three colorful ballcaps rested above on shelves, none of which represented the Pittsburgh Pirates or any other city he’s been linked to as a potential trade destination.
Aiyuk, however, was nowhere to be seen Thursday when the media was allowed entry, the first post-practice access since he and his teammates reported a month ago for training camp. He has remained out of sight and out of practice,...