Birmingham have signed Blackburn defender Jeff Kenna on a free transfer.
The Republic of Ireland international, who has signed a two-and-half-year deal, had ended his month's loan with Birmingham on Tuesday in the 1-0 defeat by West Brom at The Hawthorns.
But Kenna and manager Steve Bruce were keen to make the switch permanent, and he is again expected to be in the side for the visit of Crewe to St Andrews.
PA