Full-back is now very much an area of weakness on both sides of the field for Leeds United. The Whites had looked well stocked at right-back when the window opened but after Djed Spence’s shock return to Tottenham Hotspur, and Luke Ayling’s imminent move to Middlesbrough, they are now looking light. At the beginning of the month, though, it was left-back which looked the biggest priority, with Daniel Farke even confirming himself that it would be a position Leeds looked at. Both Sam Byram and Junior Firpo have struggled with injuries this season but so far the only real link to a new left-back…