We know that Lucasfilm officially stated that they would use Legends/EU materials as (re)sources for new Disney canon:
Creators of new Star Wars entertainment have full access to the rich content of the Expanded Universe. (Official Darth Mickey
Order 66New Disney Canon announcement)
@Hoopserwan It's all non-canon, but it all exists as a resource that could be used down the line (Heddle on Twitter).
We know that they likely did use EU/Legends as a resource, for The Force Awakens.
But that knowledge is basically fan deductions, not first-hand information.
Did anyone at LucasFilm (or licensed material creators) acknowledge specific cases of borrowing specific information/ideas from EU/Legends into Disney Canon?
(as opposed to generic fact that "yes we will/do/did")
Just to clarify, the question is about canon material created after Disney transitions, NOT Lucas's own use of EU material in Episodes I-VI or Clone Wars.