How do you discuss a Goldman offer in a Lazard final round without sounding rude?

Acknowledge, differentiate, and explain why you are still here.

'I want to be transparent: I do have an offer from Goldman Frankfurt with a deadline in two weeks. I see Goldman and Lazard as very different platforms. Goldman offers global scale and broad financing / M&A exposure. Lazard offers independent advisory depth, leaner teams, and a stronger fit with my interest in complex M&A / restructuring. I am here because Lazard is a real choice for me, not because I am collecting offers.'

Do not use Goldman as a threat. Use it as context, then make Lazard-specific motivation credible.

comparing prestige, compensation, or implying Lazard must persuade you.