The signing of Nelson will surely mean that Connolly will be leaving, as we already have Morrison, Manga and Bamba.
Vaulks will be an asset in an area we are short of players.
Day is a strange one, only played for Newport at League Two level the last few years. It must mean one of Etheridge, Smithies or Murphy will be leaving as we don't need 4 keepers. My money is on Smithties going with Day being the number 2.