Well, seems that there won't be a 24 movie this year, as Fox want Keifer to return to Touch for season 2 and don't want to rush it. Fair enough.
It appears from this article that writer Billy Ray had envisaged a 3-part movie story arc. Would this have encompassed an adventure in Europe and maybe Jack returning to the US to clear his name? Who knows.
The article also suggests that Antione deFuqua was being circled as director. His Tears of the Sun had shades of 24's Redemption tv movie, if you ask me (though TOTS got there first).