Offensive tackle Trent Williams and tight end Fred Davis must demonstrate their reliability to the organization and their teammates after their suspensions last season for violating the league’s drug policy, Coach Mike Shanahan said Wednesday.

   “I think they’ve got to prove it to the football team,” Shanahan said.

The two players missed the final four games of last season when they were suspended by the NFL for repeated violations of the league’s substance abuse policy. Another positive test for either player would result in a one year suspension.

   The Redskins used their franchise-player tag on Davis, and Shanahan said he’s hopeful that will prove a wise move.

   “I’d bet on Fred right now, and hopefully I’m right,” Shanahan said.

Shanahan said he expects another member of the Redskins’ receiving corps, injured wideout Leonard Hankerson, to be ready to participate in offseason activities at the start of June. Hankerson is working his way back from hip surgery.