Haas team principal Guenther Steiner has said there have been lots of enquiries about a potential drive with the team in 2019.
Although the Frenchman has showed some signs of improvement with three points finishes in the last four races, including a P4 in Austria, the damage may already have been done.
Steiner said that Haas are not actively looking to replace Grosjean at this stage, but that has not stopped the calls coming in from potential suitors.
“I wouldn’t say we are shopping around. A lot of people are shopping with us, put it this way,” Steiner said.
“There are people asking for obvious reasons and they want to see what we are doing. If somebody is asking that doesn’t mean they want to come, in my opinion, they might just be asking to see what other people are doing.
“We will decide after the holiday what we are going to do, but at the moment we don’t think about it.
“There are a lot of people asking, and it is part of my job to know what is happening in the marketplace.”
“One of the first moves is to decide what Ferrari is going to do for the future, what Renault is going to do for the future, and then we small guys come in,” Steiner added.
“I wouldn’t say we have to wait on their decisions, but that could trigger the market. I didn’t say that I want to decide after they do because maybe we have decided already without knowing what they are doing.
“I’m just saying them deciding will trigger the market because then we have the facts of what somebody is doing.
“It’s not just asking around and presuming then we have got facts. If someone announces something then we have actual facts to work with. At the moment everyone is staying the same, because no-one has done anything.”