players can be loaned between prem clubs - tim howard from man utd to everton springs to mind or rossi from united to newcastle or song from arsenal to charlton or smertin from chelsea to various or geremi from chelsea to various or even davenport from us to southampton
Dont think anyone is debating that point, its more the number of times a players registration can be changed in one window.
Name me a single agreement where a player has been bought and loaned out with the EPL in that specific window. It simply doenst happen as its not allowed