Sorry, the elite WR play has carried over into the NFL far more than the elite QB play has.
Day's offense has been lethal since he took over when he's had his Olave, MHJr, J Smith beast out there. It's a symbiotic relationship, neither can do it without the other but let's not act like this wouldn't be a major blow.
No it won't break what Day is doing but no one is going to transfer in and just make you forget the talent this kid has. I'm sure you could go back to JJ's thread and find similar bravado when the idea he might flip came up. Yeah, we would have gotten another WR but we wouldn't have had J Smith.
From everything I have read, this kid is in that kind of talent stratosphere.