Jim Caldwell, Miami Dolphins consultant, 64: Always a respected figure in the NFL world, Caldwell's tenure in Detroit (going 36-28 with two playoff appearances from 2014 to '17) looks better in retrospect. He also produced two playoff seasons in Indianapolis (going 26-22 from 2009 to 2011) before Peyton Manning's neck surgeries ruined his last year with the Colts. Caldwell has told people his health has improved since he took a leave of absence from his full-time job with the Dolphins in July. Similar to Bruce Arians, who previously dealt with health issues before being hired by the Buccaneers last offseason, a team probably would want to give Caldwell a physical before hiring him. But the desire is there. He interviewed for four jobs (Jets, Browns, Cardinals, Packers) last year.