The Fight Network is reporting Jason MacDonald could make his Octagon return as early as October 20 at UFC 77 in Cincinnati:

Canadian middleweight Jason MacDonald (19-8) expects to be back in the Octagon as early as October 20 at the U.S. Bank Arena in Cincinnati, Ohio. The Alberta native is just awaiting confirmation of his next opponent.

There have been rumors that MacDonald’s next opponent will be Yushin Okami but those rumors have never been confirmed.