Won't do a full scouting report right now, but I avoided Eifert for months because almost every prospect that comes out of Notre Dame is over-rated and I decided to put Eifert on the shelf for later because of that.
Yesterday I watched some of his game compilations and I think he's clearly the #1 TE in the draft- which says a lot because I very much like Zach Ertz. Really, really good blocker and might be better than anyone in this draft (including WRs!) at getting at jump balls. He's tall, long, and jumps really high (on tape, at least). Really good athlete that's technically sound as well. Looks more like a really big WR than a TE, but still blocks very well despite that. Has very good hands which he typically extends to the football.
I should say it again for emphasis, Eifert is special as a jump ball target. He is gets "undefendably" high on his jumps, and that could make him a huge weapon in the redzone or on deep pass attempts. Seattle is looking for this type of feature- that's why they brought in Terrell Owens, Braylon Edwards and Evan Moore. And obviously, it is an area that is as of yet unresolved. And Eifert does this as well as anyone I've ever seen, and I don't just mean at tight end.
Still looking for a negatives on him, they aren't easy to spot. Hand strength could be better (DBs can knock the ball out of his hands), and his speed is hard to judge, looks fast some plays and slow on others. I think he's an H-back that's a good enough blocker to be used in rushing attempts, so there aren't any worries about his being on the field telegraphing run/pass. I'd consider him a good value at #25.
Ertz's stock is dropping right now because of measurables, but even before I heard about that I had Eifert higher. I think both are way ahead of the top tight end prospects from last year.