On the transfer market page this evening I was shown an ad for a player - 2836808 - and the ad says his age is 21. On clicking through to the player's page he is said to be 34. I have screenshots to verify this. Either the player age is part of the 'ad' text (which allows managers to lie about their players age, and should not be possible) or the game is messing up the calculation of the player's age for the ad.