So far the 49ers have interviewed Dan Quinn, Vic Fangio, Mike Shanahan and Adam Gase
On Deck are Josh McDaniels and Rex Ryan.
They've also requested to interview Todd Bowles and Teryl Austin but no dates have been set since both their teams have Wild Card games this weekend.
49ers have not as of yet had an interview with Jim Tomsula, or if they've had one, it has not been made public. They have also reportedly shown interest in Kyle Shanahan but as of today have not scheduled nor requested an interview with him.
Mike Shanahan Most recent job: Head coach, Washington Age-62
Pros: He has the most experience of any of the known 49ers candidates and has coached two of the game's best quarterbacks – Steve Young and John Elway. That's a big selling point for a franchise trying to turn Colin Kaepernick into an elite quarterback. He also has ties to the 49ers' glory years and their original West Coast offense, which would be trumpeted in an introductory press conference.
Cons: Shanahan's last quarterback project ended with then-rookie Robert Griffin III taking a beating from which he has yet to recover. Shanahan went 24-41 in four seasons in Washington and lost his only playoff appearance.
Vic Fangio Most recent job: Defensive coordinator, 49ers
Age: 56
Pros: He showed a keen eye for placing players in the right spots when he began assembling the 49ers after the 2011 lockout. His units have finished in the top five ever since and his blunt and honest style has won the respect of his players. Fangio would add an element of calm to the franchise after such a dizzying 2014 campaign.
Cons: That blunt style may not play well with a front office that felt undermined at times by Jim Harbaugh. Meanwhile, the 49ers' most important component is Kaepernick, and they may be prefer an offensive coach.
Rex Ryan Most recent job: Former head coach, Jets
Age: 52
Pros: He has a commanding personality and presence that could galvanize even a veteran team, which the 49ers are at this point. His Jets defenses typically have been stout in recent years.
Cons: While the Jets' defenses have been top 10 in caliber, Fangio's have been top five. Hiring Ryan over Fangio could be a tough sell to the players. Furthermore, the 49ers need the most help on offense and with their quarterback, both of which were Ryan's downfalls in New York.
Adam Gase Most recent job: Offensive coordinator, Broncos
Age: 36
Pros: He's been part of one of the league's top offenses in recent seasons and has worked closely with perhaps the best quarterback in the game. Gase is said to have a strong personality and he's been an excellent match with Peyton Manning, something that must entice the 49ers as they look for someone to work with Kaepernick.
Cons: Gase is a year older than Justin Smith and might have trouble with a veteran roster that was given the run of the place under Harbaugh. Furthermore, it's hard to distinguish who was most responsible for Denver's offensive success – Gase or Manning.
Josh McDaniels Most recent job: Offensive coordinator, Patriots
Age: 38
Pros: He's also young, but the Patriots' offensive coordinator is more experienced than Gase, having been the Broncos' head coach in 2009 and 2010. Like Gase, McDaniels is known for offense and for working with quarterbacks.
Cons: McDaniels' stint in Denver ended just 12 games into his second season and it was clear he did not have the respect of the locker room. His record with quarterbacks also was not good in Denver – Jay Cutler didn't trust him and he was traded to Chicago. The Broncos selected Tim Tebow – now out of the league – in the first round of the 2010 draft.
http://www.sacbee.com/sports/nfl/san-francisco-49ers/article5352360.html
[ Edited by Phoenix49ers on Jan 3, 2015 at 9:09 AM ]