Where's Spiers playing this season? Judging from the team listings he seems to be moving from full back (or wing back?) to winger, which was happening last season.
I saw him get the runaround at full back a couple of years ago in a Youth Cup tie and, while he can't be far off the first team squad, I assume he's seen as not quite good enough defensively to play full back yet but not an improvement on the wing options we've got either.
BBM got him involved pre-season so he must be on the radar though. Very energetic whenever I've seen him. If we switch to a back three he'd be ideal for bombing up and down the touchline all game.