Seems like a silly byproduct of some overlooked detail in the new rules. If they can sign on Friday, why do they have to wait until the new League Year starts next Thursday, August 4?
Someone in the NFL should look at this. It's like saying, "Look you only have a little over a week to install your stuff, but re-signed vets can't practice the first week. We know it's goofy but . . ."