James Chester has completed his move to Championship neighbours Aston Villa.
The out of favour defender has signed a four year deal at Villa Park for a deal that could be worth up to £9m.
Chester became Albion's most expensive defender last summer when he signed from Hull City in an £8m transfer.
But the defender struggled for form at The Hawthorns and was selected mainly by Tony Pulis in an unfamiliar full back role.