'We directed him into the middle of the park and should have closed that area down and forced him out to the side,' said Ferguson. 'After that no-one closed him down and he has got a free shot.'
Asked if Carroll should have done better, Ferguson added: 'I'm not changing what I've said, that's exactly what happened.'
Ferguson has called for the spirit of 99:
'It will be a difficult game for us but no more difficult than when we went to Juventus,' said Ferguson.