It’s not just greed in monetary terms, it’s greed in sucking up all the best talent and then sending them out on loans.
I believe Chelsea, last season, had 35 players out on loan.
Actually 38 based on this Guardian report.
https://www.theguardian.com/football/2016/sep/01/chelsea-38-players-loan-who-where
18 players on loan this season, apparently
http://chelseafconline.com/chelsea-players-on-loan/
For me, this practice should be stopped or the loaning team should be held responsible for paying all the wages, rather than reducing their wage bill by doing this.