Do you do that? Seems like everyone does that all the time but if you don't give them new contracts they all becomes unhappy. So what do you do?
No. I tell them they have time left on current contract or to prove on the pitch they deserve one
Offer a contract they wont accept
1. Calmly (not assertively or any other option) ask them to sack agent.
2. They will say no. Again calmly tell them again (using the second option in the second chance you are given to make them change their mind).
3. 90% it will work and they ll sack them. So they ll forget about it for a while.