‘Tom Bresnahan, the former offensive coordinator of the Buffalo Bills, will serve as offensive line coach while the Dolphins’ Paul Boudreau undergoes surgery to remove what is believed to be a cancerous tumor from one of his kidneys. Bresnahan, 65, flew to South Florida on Tuesday from Phoenix, where he has lived since retiring from the Bills after the 1997 season. Bresnahan spent nine years with the Bills, helping them reach the Super Bowl four times during the 1990s.’