If I use your update, there are 2 jerome sinclair profiles in liverpool u18's. Please look into it. Also, upgrading Sterling and Suso makes it unrealistic. They don't deserve any upgrade IMO. They're good, with potential ability of 4 stars in FM, which is realistic. Upgrading it to 5 stars is...
Who says Jerome sinclair is not there? He is in the U18's and he is almost a wonderkid. Potential ability of 4 stars i guess, which is enough for the moment. Also, Sterling and Suso are good, but don't deserve any upgrade in the game IMO. They will automatically get better with match experience...