Leeds United have had a £13m bid rejected for Sheffield United star Gustavo Hamer ahead of Friday’s 11.30PM deadline, and details are now emerging of talks that took place between the two sides. Leeds and Sheffield United have often found each other at the negotiating table this summer. Whether it be Jamie Shackleton leaving Leeds on a free to join Chris Wilder’s side, or Jayden Bogle moving to Leeds. Alfie Gilchrist has joined the Blades on loan after links with Leeds, and it is the same in the case for winger Jesurun Rak-Sakyi. Now, Leeds are trying to raid Bramall Lane again and lure Hamer …