Big whiff on the memos. Comey memos still make it hearsay. he said-he said.
Comey's memos of what he discussed with Trump are no more significant than Susan Rice's post hoc hearsay recollections of the January 5th, 2017 meeting in the White House, or, for that matter, Richard Nixon shouting "We could [pay hush money] BUT THAT WOULD BE WRONG" into a microphone that he (and no one else) knew was there.
Ultimately, if Trump denies it, the fact that Comey says it happened is not dispositive of much of anything without further evidence.