Saints will meet Leeds after victory over West Brom on Thursday.
Solak told the Daily Echo: "It's super special and it's special because we see the happy faces.
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"You know, for the Southampton fans and for me, it's an unbelievable feeling.
"We did discuss that we went to the game at West Brom and their fans were unbelievable and we said we need to match that.
"We needed to give the same energy to our lads and I think that Phil Parsons and the rest of the management - they put a huge effort.
"They put a huge effort through you guys as well and you know the fans came back and they said 'Yeah, let's do it', so it was unbelievable."