But he believes victory against Liverpool at Anfield next month would put them in the hunt.
“I don’t think they’ve got enough to get to Liverpool, I think Liverpool will get a gap on them,” Cascarino said on talkSPORT.
“It’s still too early, because this period has four or five games that can kill your title challenge. United have got three really big games coming in the next three weeks.
“But if United go to Anfield in January and win, then you know there’s a title challenge on.
“Liverpool aren’t going to drop that many points this year, so United are going to have to get a couple of big wins to be up there.”