Working Border Collie 2 year old working heading dog

Race is a well bred large male border collie. He is very keen and working well but is a very active dog and not suitable for our farm with lots of bush and small paddocks. He would be well suited to more open big country and larger paddocks. He is very fast and fit, has a lighter eye and does tend to want to work a little closer to sheep than he should, but generally is quickly obedient to commands. We bought him for $1000 but will sell him for $500 or close offer for a quick sale.