Draftee Gibcus has been growing in stature week by week, and Broad said the first-round selection is "probably the most athletically gifted player" he's seen in his time at the Tigers.
"His endurance capability is amazing, his leap is ridiculous and he's a really smart kid, he learnt the structures so quickly," he said.
"His progression has been amazing, and he took another step forward on the weekend again, and for a key back, he manages to find the ball a lot, which is pretty impressive as well. It's pretty crazy to think he's only 18, so I think we're going to see and hear about Josh Gibcus for a very, very long time.
Source: RFC website