Don't you think Ottawa needs D much more than F? I'd be surprised if they pick a forward.
As
@le_sean said, they need everything. They're not particularly deep at forward. Giroux is aging. They have Tkachuk, Stutzle, Pinto & Greig at forward. Norris has shoulder injuries and had a really poor year. Batherson is more 2nd/3rd line tweener.
I definitely think they would take Iginla if he was there. Chabot is also injury prone, and he has 4 years left on his contract. If they take a LD like Dickinson, he's 2 years away. You don't not take Dickinson because of Chabot. You get to insulate Dickinson for a year then move on from Chabot.
Chychrun is probably gone to UFA.
I can see them taking a forward, and going for a D later. They have two 1sts, so draft a forward early then take one of Badinka, Emery, Elick,