Mexico 's Esteban Gutierrez to race for Sauber next season . Guttierrez will line up alongside Thomas Hulkenburg in 2016 . `` I am very proud to be able to confirm that I am joining Caterham F1 Team next year and He agreed to join Lotus following disappointing season . Charles Hamilton signs long - term deal with Caterham after leaving Marussia .
Mexico 's Esteban Gutierrez to race for Sauber next season . Guttierrez will line up alongside Thomas Hulkenburg in 2016 . He agreed to join Lotus following disappointing season . Charles Hamilton signs long - term deal with Caterham after leaving Marussia .