I have a couple of suggestions:
Ben Davies @ Swansea should get a CA/PA update in my opinion. He has started several games this year, but in FM 2013 he ends up on championship level, maybe lower premier if played a lot. He also signed a 3,5 year contract this November, so his contract needs changing aswell. (Exact number of starts this year is 15, if I remember correctly)
Jose Rodriguez @ Real Madrid has gotten his first cap in La Liga, Champions League and the Spanish cup this year at the mere age of 17. His stats are utter rubbish, and his PA is not that great either (3 stars for a championship team). He needs to get a lot higher CA/PA, he is not even a single star for a championship club atm.
What about Adam Morgan @ Liverpool? He hasnt got that many chances as he did last season, but his PA still seems pretty low for an eighteen year-old who got several chances for the first team last year.
George Evans @ Manchester City has been on the bench several times this year at the tender age of 17. Havent proved that much, but his PA in the game is beyond poor. If you can make the bench along players like Dzeko you deserve more.
Also Jeremy Helan has been having what seems to be quite a successfull loan at Sheffield Wednesday, so his PA should maybe be upped a bit.
I would also argue that even though he already is pretty good, Victor Moses needs to up his CA/PA a tiny bit. He has been a regular for a while now, and performs well. At the current state they always offload his as fast as they can.
And last, but not least. Luke Shaw has bags of potential and a huge PA in the game (at least I think) but his stats at the start of the game does not reflect the fact that he has hold close to a starting-position and plays respectably well against wingers at a premier league level.
Just some suggestions, thanks for the great edits!