EA released an image of the final ultimate edition of fifa 20 with a silhouette Seen in the image below.
From this image many people believed and it can be obviously seen that the player that is in the background is Zidane. This pretty much confirmed that Zidane would be an icon in FUT 20. However to backup the point even more. Within 5 minutes of EA releasing this tweet they followed Zidane on Instagram as a tease.