Swansea boss Michael Laudrup says it is likely he will bring in a goalkeeper in January as Michel Vorm needs knee surgery.
Manager Jose Mourinho believes Ashley Cole will earn a contract extension at Chelsea.
The 18-year-old Swede is moving 30 miles from Goodison Park to Edgeley Park for one month in the hope of gaining some first team experience.
And this could materialise as early as Tuesday when County host Lincoln City in the Blue Square Premier.
Hammar, who has represented Sweden at under-19 level, moved to the Toffees from Malmo in the summer of 2010.