While reports over the length of his contract with the American team differ, with both one-year and multi-year deals mooted, it does seemingly bring an end to speculation over the former McLaren driver's future.
Magnussen was in the frame for the second Renault seat alongside new signing Nico Hulkenberg, with current Renault team mate Jolyon Palmer, Esteban Ocon, and a host of other names also in the running.
Renault had an option on Magnussen for next year, with the the 24-year old reportedly already extending the French manufacturer's deadline to re-sign him once.
The 2013 Formula Renault 3.5 champion now looks to have shunned a possible opportunity to win races and titles in the future with Renault in favour of a more secure future at Haas.
A return to Ferrari, where he served as a test and reserve driver last year is arguably the most likely possibility for Gutierrez.
Bahrain International Circuit - Winter testing