Dennis is thought to be being forced out by the team's other shareholders but there has been nothing confirmed by the Woking outfit thus far.
"I'm not going to talk about individuals, but I think the team's in a good place," was all Jenson Button would say in Mexico.
"All I can say on the matter is what I've already said," he added.
Alonso meanwhile said that he needed to understand what is going on before making a comment.
"Between Mexico and Brazil, or after Abu Dhabi, we will sit with the team and know exactly what is the truth behind all these things," he said in Mexico.
"Right now I can't tell you much," he said. "Obviously Ron is part of McLaren, and McLaren is part of Ron.
"First we need to understand what is the real situation, and if there is any changes, what they are," Alonso added.
Bahrain International Circuit - Winter testing