Alexis' extra-time winner secured our place in a third Emirates FA Cup final in the past four seasons.
The Chilean completed our comeback from close range at the end of a breathtaking afternoon, and Mirror chief football writer John Cross joins Russell Hargreaves to reflect on it.
- Watch all the goals from the semi-final
- 'It was a big mental test for us today'
- Vote for your man of the match
- Why we played three at the back again
- Arsenal v Man City - Gallery
Elsewhere, Olivier Giroud is on the show to talk about his goalscoring record for France, and Adrian Clarke is back at The Chalkboard to preview a double gameweek for our first team.
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