Buffalo Bills General Manager Doug Whaley says he has granted the agent for wide receiver Mike Williams permission to seek a trade.

Whaley said Monday that Williams' agent, Hadley Englehard, asked to gauge interest from other teams in a possible trade. But Whaley says the Bills aren't actively pursuing a trade.

Williams was inactive for Sunday's 37-22 loss to the New England Patriots. Williams started the Bills' first four games, but coach Doug Marrone said Sunday's game plan called for the Bills to activate a third tight end in place of one of the team's wide receivers.

The Bills acquired Williams in April for a seventh-round draft choice in a trade with Tampa Bay. He has eight catches for 142 yards and a touchdown in five games this season.