Instead of being sarcastic like I usually am in this thread, I'll be helpful, mainly because I own Alshon in my dynasty league.
First, this is the wrong forum for these questions. You have to post them in the Assistant Coach forum.
Second, it depends on your roster. For me, I'm stacked at WR. Alshon is my best one but I have 3-4 guys that aren't too far behind him. So yes, I would do this trade in a heartbeat. I've actually proposed this exact trade to the Gio owner in my league but it got turned down. I'm not sure if it's just my league, but the guys that own the young RB's that are actually doing well in my league won't budge for anything. I even tried throwing Graham at him and he said no. He said he MIGHT do Graham and Jeffery. I laughed and gave up on Gio.
If I had some nice RB's, I'd rather have Alshon. I think Alshon will be a stud a lot longer than Gio.