Buffalo Bills tight end did not make the trip to Oakland and will be inactive Sunday against the Raiders.
Clay's wife gave birth to their first child.
Also inactive Sunday for the Bills are: cornerback Ronald Darby (concussion), wide receivers Percy Harvin (migraines) and Robert Woods (knee), quarterback Cardale Jones, tight end Logan Thomas and defensive tackle Jerel Worthy.
With Clay out, Nick O'Leary will start at tight end. Gerald Christian is the only other active tight end on the roster.