I work in a software company and my 2 year contract ends in a few months. The management wants to take me on in any case, because I was able to take over personnel responsibility and lead a team in a very short time and performing good (although it' s my first job, and I got all this responsibilities because we are lacking of manpower and other suitable candidates).
Due to my role as team leader, I was asked in a management meeting about the future of one of my colleagues, who also has a 2-year contract. The colleague in question is performing rather poorly and it was unanimously agreed not to extend his contract. By chance, however, one of the managers blabbed by mistake the annual salary of the colleague, which is quite a lot higher than mine. Now that I have to negotiate my salary for a permanent contract soon, I wonder if it would be a good idea to say that the colleague in question earns more and that I think I should earn at least the same (if not more). Officially, however, I do not know what the colleague has earned someone else has blabbed.
Is it a bad habit to lead a salary negotiation like this? Because it could really bring my manager into embarrassment and I do not intend to do so. Would it be better to totally skip this information and lead the negotiation like I would not know about the salary of the colleague? Thanks