Yes buyng free players are best choice to make some money but i havent seen a single one these days.And selling them is becoming more difficult now with this new transfer market.I try to sell 3 players of 81 quality (im lvl 13) for more than 2 weeks and nothing.No one buys them,one has special ability (dribling MC) and without succes.I try to get them to 84 quality to be able to sell them but that will take about 1 season or more.Is risky strategy now with these free players unless their ending is in 4 or 9..