Bloomberg published an article titled "Trump's Sexual History Could Imperil Him if He Testifies" which analyses the recent allegations against Trump and how they may affect the ongoing Russia investigation. "If the President does speak with prosecutors, his legal team will work hard to bar them from asking" about recent allegations of past indiscretions.
“The key concern for the Trump legal team is, will the president be asked about these issues by the Mueller team, or can they reach an agreement to exclude these subjects,” Coffey said. “These issues don’t seem related to Russia, but at times prosecutors take a very broad view of what’s relevant.”
A copy of the full Bloomberg article can be found here.