McLaren racing director Eric Boullier says it is the British team's intention to retain Jenson Button next season.
For the second consecutive year Button, the 2009 world champion, faces an uncertain future at McLaren.
Kevin Magnussen, forced sideways are one year following Fernando Alonso's arrival and Stoffel Vandoorne, the runaway leader in Formula One's feeder series GP2, are both reported to be under consideration for his seat.
But Boullier, speaking from Monza, dropped the biggest hint so far that Button could be handed a seventh campaign with McLaren - and the 17th season of his grand prix career.
"As far as we are concerned, at McLaren, we only have two cars, so there will be only two race seats," Boullier said.
"We have two world champions today and we do intend to keep them, so far. Nevertheless it is a luxury problem to have four good drivers.
"Kevin and Stoffel are very good drivers, but if we can't fit or accommodate them at home we will do our best to make sure they can race next year."
Lewis Hamilton blew away his rivals to claim his sixth straight pole position for Sunday's Belgian Grand Prix.
The world champion posted a best lap of one minute 47.197 seconds to leave Mercedes team-mate Nico Rosberg trailing in his wake by almost half-a-second.
It marked Hamilton's 10th pole from 11 races this season, and with it, an unassailable lead in the race for the pole position trophy - a title which Rosberg won last year.
Valtteri Bottas was third for Williams with Ferrari's Sebastian Vettel, winner last time out in Hungary, only ninth.
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Lewis Hamilton was lost for words after his error-strewn performance in Sunday's dramatic Hungarian Grand Prix.
Hamilton, who had topped every practice and qualifying session heading into the race, was expected to seal a record fifth victory here in Budapest.
But in the wake of yet another sluggish start he was fourth by turn one, and in a bid to re-pass Nico Rosberg at the chicane he fell off the track.
While he fought back from 10th to fourth, Hamilton then damaged his front wing after a sloppy collision with Daniel Ricciardo
He was hit with a drive-through penalty, and left the pit lane in 13th, but in this most spectacular and chaotic of races he somehow crossed the line in sixth.
I was all over the place. I really don't have any words to describe what happened.
It was a really bad performance from me and I don't know if it was a lack of concentration or what.
I pushed right to the end but there were so many obstacles. It's like there were two different directions and each time I chose the wrong one.
Sebastian Vettel dedicated his victory to Jules Bianchi after winning a thrilling Hungarian Grand Prix.
In a race which had it all, the Ferrari driver finished ahead of Daniil Kvyat with the Russian's Red Bull team-mate Daniel Ricciardo completing the podium. Pole-sitter Lewis Hamilton endured an error-prone race as he crossed the line in sixth.
But there was some joy for the Briton after his Mercedes team-mate and rival for this year's championship Nico Rosberg could manage only eighth following a collision with Ricciardo in the closing stages.
Ferrari's Sebastian Vettel has won the Hungarian Grand Prix ahead of Red Bull drivers Daniil Kvyat and Daniel Ricciardo.
Lewis Hamilton, who started the day in pole position, crossed the line 6th fastest in what proved a day of damage limitation for the reigning champion.
Jules Bianchi's family have arrived for the Hungarian Grand Prix as the sport of Formula One unites in tribute to the Frenchman.
Bianchi became the first F1 driver in a generation to die as a result of the brain injuries he sustained at the Japanese Grand Prix on October 5.
His death was announced last Friday after he failed to regain conciousness from his devastating collision with a recovery vehicle at the rain-lashed race at Suzuka.
Bianchi was laid to rest in his home city of Nice in France earlier this week, and a one-minute silence will be observed in tribute to the former Marussia driver before Sunday's Hungarian Grand Prix.
Bianchi's parents, Philippe and Christine, and his brother Tom arrived in the paddock shortly before midday. Philippe and Tom were both wearing specially designed white polo shirts with "JB#17" woven in red on the front and back.
The FIA announced on Monday that 17, Bianchi's race number, will be retired from the sport in his memory.
Bianchi's death, the first in the sport since Ayrton Senna was killed at the 1994 San Marino Grand Prix, has cast a long shadow.
Lewis Hamilton will start from pole position for the Hungarian Grand Prix after his sizzling form showed no sign of relenting in the searing Budapest heat.
The world champion, fastest in every practice session so far this weekend, posted a best lap of one minute 22.020 seconds to qualify ahead of his Mercedes team-mate Nico Rosberg.
Ferrari's Sebastian Vettel will start from third with Red Bull's Daniel Ricciardo joining the four-time world champion on the second row.
Lewis Hamilton dealt another psychological blow to Nico Rosberg ahead of qualifying for the Hungarian Grand Prix by topping the timesheets in final practice.
Hamilton, who was fastest in both session on Friday, maintained his sizzling form in the soaring Budapest heat to post a best lap of one minute 22.997 seconds.
Rosberg may have been encouraged by the margin to his team-mate - just 0.098secs - as he bids to prevent Hamilton from winning a record fifth time here in Hungary.
But his session ended in a chaotic fashion as he was left stranded at the end of the pit-lane. He abandoned his faulty car and headed to the back of the Mercedes garage.
In terms of pace, unsurprisingly, the Mercedes pair were the class of the field, with Ferrari's Sebastian Vettel their closest challenger, albeit the best part of nine tenths adrift. Daniil Kvyat was next up in his Red Bull, with Toro Rosso driver Carlos Sainz in fifth.