Kalamazoo — It's still a secret.

Heck, even Western Michigan officials don't know who ESPN will tap to be the celebrity guest picker for "College GameDay" on Saturday.

ESPN requested a list of suggestions from WMU officials, and on the list were several big-named alums of the school — including actors Tim Allen and Terry Crews, former college and NFL football star Greg Jennings, and baseball executive Dave Dombrowski, formerly with the Tigers and now with the Red Sox.

WMU also put Kalamazoo native Derek Jeter on the list, even though he's not an alum of Western Michigan.

Coach P.J. Fleck expressed interest earlier this week in Jeter being the guest picker, joining Lee Corso and Co. on set ahead of Saturday's 3:30 p.m. Buffalo-Western Michigan game at Waldo Stadium. It's unclear if Jeter would be available, especially given the numerous cameos he's made in the state already this fall, first at his Michigan Sports Hall of Fame induction, then at a Michigan game.

Jennings, a Kalamazoo native, Kalamazoo Central High alum and Broncos star receiver before played 10 seasons in the NFL (2006-15), mostly with the Green Bay Packers, would seem to make the most sense.

Crews, a Flint native who also played defensive end at WMU before joining the NFL and, later, the acting world, would be a popular choice, too.

Allen, of "Home Improvement" fame, has not had an overly close relationship with WMU over the years, though he was presented an honorary degree from the university back in the 1990s and has been in Detroit more, last year serving as the grand marshal of the Detroit Thanksgiving Day parade.

Dombrowski could be a wild card. He's expected to be in town for the game, as his son, Landon, a potential WMU baseball recruit, makes a visit to campus.