Both Bannon (while campaign chair) and Gates (deputy campaign chair) testified at the Stone trial that they were in contact with Roger Stone re: Wikileaks.
RE:Bannon:
However, when Bannon was asked why he emailed Stone on Oct 4, 2016 — the date WikiLeaks announced the dump of Hillary Clinton campaign chairman John Podesta’s emails — Bannon replied, “Because Roger was the guy who knew about WikiLeaks and knew Julian Assange.”
Trump and his staff talked to Stone numerous times on the same day according to Stone’s cell phone records that were revealed in pre-trial evidence.
Gates:
Gates said that Stone was also known in the Trump campaign as a source of information about upcoming releases of stolen Democratic emails by WikiLeaks. Gates testified that Manafort told him that he “would be updating other people on the campaign, including the candidate.”
Trump written Mueller testimony:
I do not recall discussing WikiLeaks with him, nor do I recall being aware of Mr. Stone having discussed WikiLeaks with individuals associated with my campaign.