In the past cricket squads were quite settled, you might have the odd player change now and then but it was nothing like now with dozens of players rumoured to be making moves between counties. Warwickshire have of course been linked with every player recently bar WG Grace (who i believe is going to the Pears). A number of players are rumoured to be leaving too such as Tahir who is out of contract and Richard Johnson.
Stephen Moore and Gareth Batty are among the Worcester exodus (Steven Davies has already gone to Surrey), both have been linked with the Bears though Batty may go to Surrey instead. Of course a lot depends on the Bears staying up in division 1.