The president’s top aides met with him this week to discuss his options, including a possible resignation. That option was reportedly taken off the table, since Trump, according to the sources, does not have confidence that Vice President Mike Pence will grant him a pardon. Trump also has concerns about the Senate trial, and reportedly suggested that he testify on his own behalf. His aides reportedly discouraged that notion.
The possibility of a trial and final decision being made on the impeachment by the Senate has a slim window, with the soonest possibility of a trial start being Tuesday. That is the day before Trump’s last day in the White House.