If I have excess in transfer budget, I invest in signing quality transfer-listed, unhappy, unsettled, want-out players, even if I do not need them. I then bench them and maybe playing them in a few games if injury crisis arises. After 1 season or half a season (if I signed them in Jan), I sell them for a way much higher price. That way I'm increasing club revenues and my transfer budget (esp that I have a high percentage of available transfer fee).