The Eagles were upset by Hawthorn by 28 points on Saturday night at Optus Stadium to slide down to fifth on the ladder.
And Cornes believes the club’s unfavourable September fixture will make it too hard for them to go all the way, where they would have to win two away games to qualify for the Grand Final.
“I don’t think you can win it (the premiership) from outside the top four,” he told AFL.com.au’s The Round So Far on Saturday night.
“I know the Western Bulldogs did it in 2016 but it’s extremely unlikely.
“It’s so hard to win a premiership, let alone to do it outside the top four, which is where we think they’ll end up.
“Particularly with the travel factor, it’s highly unlikely.
“In fact, I don’t think they can do it.
Terry: "The loss to West Coast is the big story of the weekend to me. Before this weekend, I had them making it into the Grand Final. They will now play a home final the first week and then would be on the road for the rest of it. I think it's a bridge too far."
— AFL Nation (@AFLNation) August 25, 2019