Got a full roster to replace my oldtimers.
3 bought from market (was assuming prices skyrocketing this and next season, so i bought them last season fairly cheap)
1 from scout and the last from youth academy.
What i can recommend is buying 18yr old players or older with decent stats now until you can afford younger more talented players later on.
Others might invest more and get better players, i'm not sure tho but you can at least invest little money into it and maybe you get lucky :)