With the 2017 Formula 1 driver market temporarily calmed following Ferrari's decision to stick with Kimi Raikkonen, McLaren and Sergio Perez have emerged as the ones capable of kicking it back into life. Based on their decisions, we will either see a flurry of activity, or a 2017 grid that largely resembles the status quo. But why?
McLaren already has Fernando Alonso signed up for next season, but it faces the same conundrum as last year on who will partner him - Jenson Button or Stoffel Vandoorne? And while it ponders that decision, Williams waits in anticipation.
Perez may well have a contract to drive for Force India next season, but he says can leave the team if his sponsors choose to take their prodigious backing elsewhere. Renault wants him and it is believed Williams does, too. So that leaves three teams hanging on his decision.
Taking McLaren first, the Woking-based team plans to wait until September before sitting down with Button and Vandoorne to talk about next year.