But then get slated for not paying whatever in order to get the deal done early?Surely the player's agent would just inform PL clubs at the point when a club from another country agrees a deal. A PL club can then just beat the overseas bid by a small amount and it's still a better deal for the selling club.
I think clubs definitely push their luck with the fees they request from English clubs and English clubs sometimes bite if they think they need to get in before another English club but if you're prepared to wait until later in the window then the fees will definitely come down as selling clubs are forced to get realistic for fees they can demand for unwanted players.