1) Brees backward arm extension has taken a hit since his shoulder injury. Yes he can still laser a pass but he has his limits and that'll take more than just a few weeks to regain. I wouldn't want him when he's half-healthy.
2) Forte is not only a beast of a RB, regardless of last few stats, he's a pass catcher and more-so than Murray. I would keep him because of that.
3) I think this trade is slightly tilted towards him simply because he's going to strengthen his RB lineup while you're just staying level (not getting worse nor getting any better)
4) Some are going to get hostile when I say this but it's simply my opinion, Eli is more reliable than Brees at this point. I repeat, AT THIS POINT lol