He's a great young talent at a position that isn't of need.
Sorry but we don't need a guy who 1) is 1 step away from getting a lengthy league suspension for his off the field stupidity and 2) he's going to want a nice contract in the very near future. In case folks have forgotten, and I'm sure the OP would love to, we have this kid named Bryant. You might have heard of him. He's a better WR than Gordon, and a large majority of the WR's in the league, and he's going to be needing a nice new deal soon.
On top of that this team desperately HAS TO HAVE D-Line help. Giving up a 2nd round pick for a luxury that is not needed on offense would be absolutely stupid.