Southampton are set to turn their attentions away from the battle for Championship promotion for a brief time on Wednesday. Following a run of three defeats in their last four in the league, the Saints must now deal with the prospect of the FA Cup fifth round. That will see the Championship side make the long trip to Anfield, to take on Liverpool in front of the ITV cameras. The hosts of course, come into this on the back of their League Cup final win over Chelsea on Sunday afternoon. Even so, Southampton boss Russell Martin clearly appears to be relishing going up against the Reds, and in par…