Although under contract with the Silverstone-based team, Hulkenberg was allowed to leave for the French manufacturer, and Fernley thinks the quick resolution of the deal was actually beneficial to to the German.
"Credit to Vijay [Mallya, team principal] for dealing with things swiftly, efficiently and compassionately," he told Autosport. "It settled Nico down and allowed him to do what we need him to do for the balance of his career with us."
"He always gives 100%, but what it did do was put his mind at rest that everything was clear and done," he added. "The efficient and quick way we dealt with it, Vijay in particular, has helped stabilise him."
"We are fighting for fourth [in the constructors' championship] and we need both drivers working at full capacity, so I don't think we've lost anything," continued Fernley. "Vijay did it really well, controlled it, settled everybody down, got back to the next race and it's business as usual."
Bahrain International Circuit - Winter testing