"I still don't think we have realised the scale of what we are doing, but when all this is over we will". The German global, who is set to depart Anfield in the summer after rejecting a number of contract offers from the club, has already made six Champions League starts for the Reds.
This will be Liverpool's 378th game in European competitions, and the 196th in the European Cup.
For Liverpool's trio, their record-breaking 29 goals so far could yet all be in vain.
Gerrard Houllier, Liverpool manager 1998-2004: "When we are talking about attractive and absolute football, then we are talking about Liverpool". I have seen his team play many matches and it's just fantastic football. But if Klopp's team start well, and get that head of steam we know and love, they are close to irresistible.
"I never really go to big games to watch as a fan but I was in Cardiff", the Netherlands worldwide explained. "If we do that, we can hurt them".
"They'll be watching this weekend and could have been playing", Henry said.
Liverpool lost the 2016 Europa League final to Sevilla, and Henderson believes it's time to deliver.
A mere 284 days after commencing their Champions League campaign at the Rhein-Neckar-Arena in Hoffenheim, Liverpool will play their first Champions League final in 11 years.