Hey! I think a good tool to have in the game would be a player comparator.

Simply you could choose 2 players and see their ratings a little bit like what Football Manager does (The soccer bestseller)

Example: http://www.fm-base.co.uk/forum/attachments/football-manager-2015-players/769433-fm15-deal-no-deal-thread-please-use-when-asking-if-you-should-buy-player-x-y-john-stones_-comparison-comparison.png