When Bucks general manager Jon Horst completes the first round of interviews, he is expected to narrow to list of head coach candidates to three-or-four finalists this week.  Team owners Marc Lasry and Wes Edens will get involved at that point.  An additional candidate may have popped up when the Toronto Raptors fired Dwane Casey Friday after his team was knocked out of the N-B-A playoffs.  After winning a league-high 59 games during the regular season, Casey was named the Michael H. Goldberg N-B-C-A Coach of the Year last month.