Caserio “Door is Always Open” for Diggs Return”.

It was my understanding that March 17 was the deadline to re-sign him in regard to reducing his $16 million dead cap charge for 2025. Im wondering if he were to still re-sign ahead of free agency, would this still be possible? And if he tests free agency, then returns? I’m assuming we’re stuck holding that bag now regardless, but would appreciate any insight into this for those well versed with the cap! I know the Vikings extended this deadline for Aaron jones with a much smaller dead cap hit, so maybe there’s a chance we did so as well without announcing it?