C'mon man, it's not that big a deal...it's APRIL! There are plenty of more voluntary mini camps and team events. He'll catch on fast. I'm sure Jauron sent him some stuff to study...he'll be just fine. It's not like he's learning a new position. He still has to cover the other team's best wide receivers.
Don't get me wrong I wish he was there, but I just don't think it's a reason to have ill will towards Clements.
Besides...is there really a penalty if a players signs a franchise tag then gets a long term deal? Does the team really lose the franchise tag? I'm in the dark on that subject.