Ot going to happen, not with the popularity Trump has, and sure as hell not without the money he is making. I personally think he is going to tell Schumer that if impeachment charges get brought up, unless Schumer agrees to drop it with McConnell, the President has the right to discovery as a defense, and everybody goes down but Trump if that happens.
McConnell is on the intel Gang of 8. Brennan has already said they were briefed on the spying against the Trump campaign. The last thing McConnell wants is a deep dive on this subject until the last minute possible before the election. At that point there will be tremendous pressure on POTUS and his supporters to play team ball and not rock the boat with an intra GOP fight.