Not sure how reliable, but this article mentions Igor's speed a couple of times, so finger's crossed.
https://www.sussexexpress.co.uk/sport/football/brighton-and-hove-albion/igor-julio-everything-you-need-to-know-about-brightons-new-ps17m-defender-4236162
I get the impression based on the Sporting Lisbon/Lamptey rumours in January, that we might have looked to sell this summer (benefiting Lamptey and us), but the injury made that difficult.