The outcome could affect Alonso's future.
"It's a team decision," he said at Silverstone, "but definitely the sooner a decision is made the better prepared you are for next year.
"So I imagine they will try to make a decision soon, which I will obviously support," Alonso added.
As for how the outcome will affect his decision about what to do for 2018, Alonso answered: "It's hard to guess because there are many combinations of cars and engines.
"But we have clearly identified what we lack, so if we can improve that, we can be competitive."