The fuming Blues boss will be taking his back four to school this week to rid them of the errors which derailed their European charge at Goodison Park.

He slammed their 'dreadful' defending in Sunday's 3-1 defeat and insisted all the goals should have been averted.

Redknapp pinpointed Sulley Muntari as the man who was at fault for Everton's killer second.

And he grimly insisted Manchester United would hand his men a hiding in Saturday's FA Cup quarter-final showdown unless they cut out the mistakes.

Redknapp said: 'The defending for the goals on Sunday was dreadful.

'With 20 minutes to go I couldn't see us losing. It was even stevens.

'Then Tim Cahill came with a free header because we didn't track him.

'It's no surprise he does that. We worked on it before the game.

'So for Sulley Muntari to track him halfway and then switch off was frustrating.

'We had a dreadful start, got back into the game and did that.

'We have to work on it because if we think that was tough just wait until Saturday. That's going to be even tougher.

'Everton are a strong team but United are on another level.'

Redknapp believed all three goals in Sunday's defeat should have been avoided.

It was an uncharacteristically poor afternoon from a defence who have been solid for the vast majority of the campaign.

Redknapp and his coaching staff will carry out a post mortem at their Eastleigh training base this week.

He knew any kind of lapses against the champions would prove to be fatal.

United possess one of the game's great exponents of finding space with late runs in Paul Scholes.

And in Wayne Rooney they have someone who will have to be marked from the deep-lying position, where he is so dangerous.

Then there is Carlos Tevez, the often unplayable Cristiano Ronaldo and the likes of Nani and Anderson.

Redknapp said: 'The defending was terrible for the first and third goals, too. Terrible.

'It's something we'll be working on this week.

'It's something we have to look at closely, that's for sure.

'Wayne Rooney likes to arrive late and so does Paul Scholes, but they are just world-class players.

'But United have them all over the pitch – and on the bench.'