FOXBOROUGH — While rookie quarterback Ryan Tannehill has been the focal point of Miami’s offense this season, Bill Belichick said running back Reggie Bush, a dual threat, was not to be overlooked when the Patriots face the Dolphins Sunday at Sun Life Stadium.

“Absolutely, he’s a dynamic player,’’ Belichick said of Bush, who is Miami’s leading rusher with 662 yards and fourth-leading receiver with 24 receptions for 189 yards.