Currently I'm working in a leadership/management position for a tech company. Part of my responsibilities is to help my team as a career advisor and guide them to improve their performance and achieve promotions in the future.
This career advisor role helped to build trust amongst my team mates, and usually they will approach me to talk about career outside our company, and I'm always open to discuss this topic, because I truly believe that they should be preparing themselves to the market as a whole, and not only our company.
Thanks to the built trust we have one of my colleagues approached me today and said they received a better job opportunity from another company. They are still thinking about accepting it or not, but my guts says that they probably will accept.
Important: I do not hold the decision to fire, promote or hire someone. While my opinion is highly important for any situation of this kind, I'm never the one to make the final decision.
Question: now that I have this information in my hands, should I disclose it with my direct boss (which will help us prepare for an eventual counter offer proposal) or should I remain silent about this to not risk the trust I built with this team member?