The Blues travel to Old Trafford under the guidance of interim manager Guus Hiddink with United manager Van Gaal under increasing pressure .
Interim manager Guus Hiddink replaced Jose Mourinho after he was sacked .
The Blues travel to Old Trafford under the guidance of interim manager Guus Hiddink , who replaced Jose Mourinho after he was sacked , with United manager Van Gaal under increasing pressure .