The American businessman revealed that he will address questions regarding his future at the end of the season.
However, Lambert has claimed that he will tell either Lerner or a potential new owner that he wants to remain as manager at the Midlands outfit.
"I honestly don't know [if Lerner will sell]," Lambert told reporters. "I'm being totally honest with you. I'm not privy to what goes on on that side of it.
"If a new owner comes in, you have a conversation, that's normal, but I fully intend to be here. That's me being totally honest. If people come in, you sit with them and see what happens.
"If they don't, you sit with Randy, which I intend to do at the end of the season, and Randy will say what he's got to say. I fully intend to be here."
Lerner took over at Villa in 2006.