Samba Kanoute and Yann Nsaku, both CB's. Will dominate the lower leagues and in 2-3 years will be top league 1/lower championship level. Both available on free.
Vincent Pericard is great for the conference, also avaliable on free. Noël Makombo-Eboma is sensational, but costs money (not a lot), is the perfect out and out goalscorer.