Target Club/ My Agent is great! Add it to Manager Career!

I would suggest growing out your Player, and once they retire, transfer them to Manager.  By the time your toon's playing days are done, you should have gotten a rather thorough tour of the world, and discovered plenty of clubs to have opinions about, no agent suggestions needed.  Being able to roam the sidelines for a club you previously won it all with, for example, is special.