There are still plenty of details to be hammered out, but at least one BCS conference commissioner believes he and his colleagues can reach a compromise on the model for a four-team playoff to determine college football's national championship -- possibly as soon as this week.

ACC commissioner John Swofford told ESPN.com on Monday that the 11 FBS commissioners and Notre Dame athletic director Jack Swarbrick have made "considerable progress" as they head into their meeting in Chicago on Wednesday.

Swofford said he hopes the commissioners will be able to present a four-team playoff to the BCS Presidential Oversight Committee in Washington, D.C., next week. The presidents' committee, which is chaired by Virginia Tech's Charles W. Steger and includes 12 university presidents, will ultimately decide where college football's postseason is headed.

"I have some hope and a certain level of confidence," Swofford said. "When we left Florida, that was a big step to have a consensus in the room to go to a three-game, four-team playoff. I said the devil was in the details and that would be just as challenging. We're finding that to be true, but I think a lot of people have put their heads into this. I think we've made considerable progress on it. I think we're within striking distance on most of it."

The 11 FBS conference commissioners and Swarbrick agreed to move forward with a four-team playoff at an April meeting in Hollywood, Fla. They've spent much of the past two months negotiating the details of a playoff, which would replace the existing BCS structure in 2014. Under the current postseason format, the top two teams in the final BCS standings play in the BCS National Championship Game.

Among the details left to be determined: when and where two semifinals and a national championship game will be played; how the four teams will be selected; what will become of the existing BCS bowl games; and how the conferences will divide as much as $400 million to $500 million in annual TV revenue.

"Some of the details have to be worked out," Swofford said. "I think we can get there on most of it."

According to people familiar with the BCS discussions, the commissioners are leaning toward incorporating the semifinals into the existing BCS bowl games (Fiesta, Orange, Rose and Sugar). At this point, according to sources, the commissioners are leaning toward having predetermined semifinal sites -- which would be designated before a particular season begins -- and rotating them among the BCS bowls.

The commissioners considered having the two highest-rated teams host semifinal games at the BCS bowls that are traditionally associated with their respective conferences, like an SEC team playing in the Sugar Bowl or a Big Ten or Pac-12 team playing in the Rose Bowl. But the commissioners realized such an anchor system might create too many potential logistical problems, sources told ESPN.com.