McLaren are yet to make a decision on the make-up of the Formula One team for 2015 after a board meeting on Thursday.
Spaniard Fernando Alonso is reportedly set to partner Kevin Magnussen at McLaren next season, with speculation rife that Jenson Button will be the driver to make way.
Button added fuel to the fire on Friday, claiming he had an "exciting" new challenge in the works should he be overlooked by McLaren.
Boullier told Sky Sports F1 that McLaren are simply taking their time finding the right partnership for 2015 and beyond.
"There is no problem, it is just taking the time to consider what is good for McLaren," Boullier said.
"Unfortunately I cannot give you any tips as I do not know. No decision has been taken yet.
"I know there are a lot of fans, Jenson's fans, Kevin's fans, other drivers' fans and hopefully some McLaren fans, but it is just about taking the right decision for the future, not only for next year but also for the next years."