He's lost the dressing room lad, you really think the players are gonna bust a gut for him? Add in a derby day bumming at the pit just 3 days before the semi final we'll be screwed and confidence will be shot.
Get a new manager in, hope to god it's a big name and we have the new manager bounce for the remainder of the season, get a result at anafield and blitz utd or the cockneys at Wembley.
I'm 90% sure if we keep the manager we'll be dumped out the semi final as the players look to have given up (as have the majority of the fanbase). Give the new manager the rest of the season to assess the squad then in the summer aloud money to invest in the changes that he wants.