As a fan, If Singletary can turn this around somewhat and we are playing better ball at the end of the season, I wouldn't mind keeping him as the coach. If he can't get the team to play better and we flounder with another 4-12, 5-11 season, then I would love to have either Cowher or Marty. Don't want Martz, don't want Carroll, and I'm lukewarm on Holmgren.
As to what the front office thinks, I think they really want to give the job to Singletary beyond this season. But if the team doesn't improve under his interim tenure, they will be pressured to go another direction. They will go after the big names hard, mainly focusing on Carroll and Holmgren. But ultimately they will get another coordinator promoted to head coach probably not listed here, although Schwartz was runner-up to Nolan in 2005.