Answer:
...so near will I be. That your best friends shall wish I had been further.
Step-by-step explanation:
An ‘aside’ is a literately device used by a character to communicate a message directly, that can be shown in self-talk or in a speech to the audience without the other characters in the story being aware of it. Aside differs from soliloquy because it is a shorter comment. In this lines "...so near will I be. That your best friends shall wish I had been further." Trebonius is saying this words to himself because he is involved with conspirators against Caesar, but Caesar does not know, but Trebonius communicates it to the audience using aside.