Tight End Update?

Higbee is doubtful. Who is our back-up TE is Higbee cannot play? I heard McVay comment on how well Blanton is playing and that is evident. However, we need a 2nd TE for 12 personnel and in case Blanton gets hurt. Does anyone have some insight to share? Markway is on the practice squad and might be serviceable I guess. But he has not played special teams so that is worrisome.