There are suggestions that the Spaniard will call it quits at the end of the season after winning two world titles.
He also came second in the drivers’ championship three times with Ferrari.
Alonso, though, has been unable to regularly contend during his second spell with McLaren with car consistently uncompetitive.
He has already shown signs of a life after F1 having competed in the World Endurance Championship this year.
Alonso also won the 24 Hours of Le Mans, and expressed his delight in being able to race “with a competitive car”.
And former McLaren team-mate Lewis Hamilton has now had his say on the 36-year-old’s future.
“I would understand [if he retired], for sure,” Hamilton told AS.
“I do not think about Fernando in particular. I do not think the sport was unfair to Fernando. But my perception of the sport is another thing.
“Do I feel that the sport is not right? Yes. We have big and small teams and there are two seconds between the first three teams and the fourth.
“Ferrari can spend more money than Mercedes, Ferrari can veto all the rules, nobody else can. It is definitely not perfectly configured.
“It could be great and I hope that, when they make the new Concorde Agreement, it will be better for the smaller teams so that they can have a better platform for the younger drivers.
“It should not only be wealthy drivers coming in and I do not mean only in Formula One. It is the same in all disciplines. You only have rich children who come in now, where it should be talented people.”
Valtteri Bottas will begin today’s Austrian Grand Prix on pole position.