He's in my top five (Adams, Diggs, Hopkins, Ridley, and I think you can throw a blanket over the next four or five receivers based on situation). I have two problems with him in comparison to other receivers. Specifically, Davante Adams and Stefon Diggs, who are First Team All-Pro (along with Tyreek Hill).
He can be stopped with bracket coverage in a contested catch ( honestly, I would be nervous if Diggs was catching the ball and I was in his way) and he doesn't block well down the field. However, he's very young and playing in one of the most conservative offenses in football and it won't be long before he gains these two skills and gets paid accordingly.