Hamilton, who won the first of his two titles with McLaren in 2008, is one of the three highest paid drivers in the sport.
Red Bull has warned that the team could pull out of F1 unless changes were made to the current regulations.
For Sebastian Vettel the podium spot felt like a victory on his Ferrari debut in the Australian grand prix.
Lewis Hamilton beat Nico Rosberg in a one-two finish for Mercedes at the Australian Grand Prix on Sunday.
The Briton recorded a fastest lap of one minute 26.327 seconds, trouncing Rosberg by nearly six-tenths of a second.
Besides driver safety, F1 has been rocked over the last 12 months by its latest monetary crisis.
Red Bull will rely heavily on the Australian as Sebastian Vettel is all set to drive with Ferrari.
Alonso’s departure from Ferrari after five seasons and return to his former team was widely expected.
Vettel ended the season without a win after dominating the previous four championships.
Mattiacci lasted only seven months on the job after being hired in April to replace S Domenicali, who resigned.
With 33 career wins, Hamilton has little to prove. Yet he feels he did silence some doubters this year.
German, 17 points adrift of teammate, beats him to pole in season finale at Abu Dhabi.
Lewis leads Nico by 17 points overall with double points on offer in Sunday’s race, meaning win is worth 50.
The two collided on track in Belgium, Rosberg went on to finish second while Hamilton had to retire.
F1 boss Bernie said that they were too late for 2015 but are working for 2016 race in India.