In theory it's a great feature that would allow us to finally make our favorite low rated players useable, like I evolved Jean-Luc Dompé who is a 73 silver into a 79 through relentless winger and with the pacey winger evo he would genuinely become a great option for my first team. Unfortunately, that evo is bugged and it does not let me use him even though he fits all the requirements and shows up as a suggested preview option but when selecting him I get an error message.
There needs to be a fix for this before pacey winger expires. And in case it's intentional that evolved players cannot be evolved again the feature is completely worthless and that decision should be reconsidered.