The day's other semi-final sees Marco Bielsa's Leeds United, who led the league for much of the first half of the season, take on Derby County, managed by ex-England worldwide Frank Lampard.
County struggled to compete and saw the award of a penalty by referee Craig Pawson overturned when his assistant, Eddie Smart, advised the official that Jack Harrison had not been guilty of fouling Jayden Bogle.
'Contact is minimal but there is a foul there and I don't understand why it was changed.
"We're upbeat and like I said, it's halftime".
"I'm not standing here and saying it was a clear penalty; I've looked at it and it's probably right in the middle".
Apart from the first minutes of the first half and then 10 or 15 minutes in the second half, we dominated the ball, we defended well, we created danger and we had chances to be more risky. I thought, in the early parts of the game, we were good, created a couple of chances and we were positive.
"We still have 90 minutes to play and we only have a difference of one goal".
'The Champions League games this week are a warning of what could happen, ' he added.
"Their team has been building for a few years, they have players that have been here in this league for years and, for the majority of our players, it's their first proper season in this league". They are lessons for us to learn. "We've got a full game to go and do what we need to do to get what we need.it's not a result that's come from a lack of hard work".