Leeds have appointed former player Gary McAllister as their new manager after Dennis Wise's move to Newcastle.
McAllister scored 46 goals in 295 appearances for Leeds
Ex-Scotland midfielder McAllister, 43, who played for Leeds from 1990 to 1996, has joined initially until the summer.
He also played for Leicester, Liverpool and Coventry, whom he managed for 18 months before leaving to care for wife Denise, who died of cancer in 2006.
McAllister, who won 57 caps, was in the frame for the Scotland job before Alex McLeish was appointed in 2007.
However, he pulled out of the running to succeed McLeish early on and George Burley got the job earlier this month.
Wise left the club on Tuesday after 15 months in charge, while assistant Dave Bassett has also departed.
Technical director Gwyn Williams will take charge of the game at Southend.