I grasp the complexities of agent/player/club life just fine.
I invite you and everyone here to google the phrase "football agent talks about offer" or similar - you'll find a lot of Gio links, a bunch about offers already rejected (eg Mendes re Ronaldo), and that's it.
You will not find any "lengthy list" of agents claiming current interest in players they represent that are under contract - heck I will take a single instance (besides Gio).
Agents are whipping boys for mgmt, and the press that are fed by mgmt, but any that are "habitually detrimental to their clients needs" don't keep clients for long.