He doesn't really have that many exciting tools. He doesn't have a big arm at all. He doesn't zip passes in there and he's not a runner. He showed good anticipation and timing last year, but I truly believe their offense being new and unseen before contributed to his success. Guys were wide open frequently, and I think the league will adjust at least a little bit. Desean is gone, and I don't think that can just be dismissed. They were, as a whole, extraordinarily healthy last year. Maclin was the only moderately major, decent player to miss time. The whole OL was totally healthy, McCoy was never banged up, etc. I also feel their defense overachieved last year and will regress, which will hurt the offense and put more pressure on Foles to actually make plays (which he really didn't do much last year).
Also, huge regression because 27/2 is stupid and simply will not happen again, or anywhere close. He threw multiple balls weekly that miraculously weren't picked. If he can't get rid of the ball quickly he gets in trouble.