I have copied a post I did for another thread, some of it is relevant but not all
Dele Adebola, yes 38 I know, lots of experience and scored a couple off the bench for me in league 2
Josh Sumner, young attacking midfielder
Elikern Amenku, free at start, 19yo cm, got him for Mansfield and loaned him to a non league side
Eric Odhiambo, right winger free at the start
Miguel Comminges full back, would be useful in that league for you
Also consider Elliot Durrell and Nicholas Bignall, both bought for my Mansfield team, 10k and 54k at end of first season from non league clubs, was not really good enough, but still would be for good for your side, Danny Gardner the same, got for 15k but turned out fantastic.
Couple of other names to try Joe Flint, Csaba Somogyi, Jason Gregory, Shelton Martis, Hamza Bancherif and Liam Marsden