Before then, there are sure to be plenty of rumours surrounding West Ham's prize asset - but the east London club are determined to keep hold of Payet.
As France fell agonisingly short in their home Euro 2016 tournament, Payet would finish joint runner-up in the Golden Boot race on three goals and was possibly the competition's most creative player - topping the ranks for key passes and providing two assists. "I would say to you he's not for sale".
Even if West ham have Carroll firing on all cylinders they are likely to need another striker, particularly with both Diafra Sakho and Enner Valencia having struggled for goals last term and now thought to be looking to leave the club.
"Payet is not for sale", Sullivan told the Daily Mirror.
"If someone wants to break the world record [for him] we might consider it".
His departure could undo everything Bilic accomplished at West Ham last season. But just because a big club wants him, tough luck.
Though the tackle appeared to be a genuine attempt to win the ball, the resulting injury to Ronaldo could make an attempt to sign him hard for the club.
'The one-sided deal is somebody comes in with £30m or £40m, offers the player double the money he's on, and the player wants to go because he can double his money.
'He's worth £100m, even at his age.
"The superclubs would come after a player of his ability and we wouldn't listen to any offer under £50m".
UEFA used a specially designed algorithm to track players' form and performance throughout Euro 2016 and the West Ham man led the ranking before the tournament and after it, despite Portugal's win over France in the final.