Andrew hadn't cared about Dastan since he was replaced, after all, he didn't care what a person like that could do, he hadn't even bothered to ask about how Candice had dealt with him.
However, sometimes it was better to be informed of the movements of arrogant and spiteful people like him. It turns out that Candice hadn't been very hard on him, she had just fired him.
Obviously, losing a job as a manager in an organization like Candice's was a harsh punishment, since not everyone has those opportunities, however, people like him were potential enemies, so leaving them unguarded could lead to future problems and that was what was happening.
Candice didn't give much importance to a small character like Dastan, for her firing was enough and Dastan didn't have the balls to scheme against her, but Andrew was different.