San Diego Chargers offensive coordinator Cam Cameron returned to the Miami Dolphins' complex Friday accompanied by general manager Randy Mueller, raising speculation the team might be on the verge of hiring a new coach. Team owner Wayne Huizenga and chief executive Joe Bailey arrived earlier at the complex. Cameron has been in South Florida since Wednesday, when he began a second round of interviews. The Dolphins, looking to replace Nick Saban who left for Alabama on Jan. 3, said Thursday they hoped to make a decision by Saturday.