I can get waiting from the hypothetical FA perspective, but another reason it's a bit unfair to owners is because I've had owners that decide they're not gonna go after a big fish and just pursue their secondary options so they put offers out. They lose out on those options, so decide to put all their money back on a big fish, and a guy I've been leading on for 3 days, I suddenly have competition for. By having the big fish always wait until late to sign, it gives people a fallback if they miss out on other options, while the people who have had that player as their target the entire time potentially lose out.