Having more than one account is forbidden. If you believe someone's using more than one account, for any purpose, you should report that user.
Apart from that:
- you can search for players and filter them by their skills if they're transferlisted.
- you must make use of your scout to get a report from a single player that isn't in the transfer list.
Anyway, I also think there should be a rough scouting analysis for any player in the game. For instance, you go to the squad list of another team, and you're able to see something like: Mental: Bad; Phisical: Good; Defending: Incredible; Attacking: Clumsy. That would be more realistic: you don't know how good is a player in terms of exact skills, but get a rough idea of it.