I have had similar issue too...
I see many friends buying expensive 18 year old players which I don't even see on my transfer market.
Can someone explain why only some of the players are shown.
Is it just that there are too many players on transfer list and only some of them are shown?
If so, can there be some manager preferences like "Include all young players", ""show only most/least expensive players",etc.
Some filters which will allow a manager to view the kind of players he wants and get the best of them at the transfer market.