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Romain Grosjean has already begun working with the Haas Formula 1 team ahead of his 2016 move, with Esteban Gutierrez expected to be announced as his team-mate on Friday.

Autosport understands Haas will unveil Ferrari reserve driver Gutierrez as its second driver to coincide with his home grand prix in Mexico this weekend.

Although Grosjean remains a Lotus driver, the team is giving him the chance to plan and work with Haas in advance, with the relationship ramping up following the United States GP weekend.

"First of all I have been surprised by the fans since I signed with Haas," said Grosjean.

"I got to Austin and there was a lot of support, a lot of people happy I signed for Haas and that it is going to be a great year next season.

"Gene [Haas, owner] and Gunther [Steiner, team principal] were at the track and we kept talking about next year.

"Then on Monday I went to visit Haas Automation, north of LA, and later that day I had dinner with Gene and Gunther, and again we went through the plans.

"I thought how much I would like it to be the day before the first winter test when I would be sitting in the car and discovering whether it will be a good one or not.

"But it's very exciting, a very good project."

Grosjean declined to discuss Gutierrez specifically, instead speaking in general terms as to what he expects from a team-mate, particularly after working with world champions Fernando Alonso and Kimi Raikkonen before linking up with Pastor Maldonado.

"I just want a quick driver," said Grosjean.

"With Alonso and Raikkonen, they were both world champions, experienced, and great to be alongside them. I learned a lot.

"With Pastor he is very quick. I'm always trying to discover his data, where I can improve. He always keeps you on your toes.

"With Haas, they want to work, so I just want someone who will help the team to improve because when you've two [experienced] drivers offering feedback it's much better than one."