Liverpool moved to within eight games of "immortality" in the shape of an unprecedented quadruple after beating Villarreal 2-0 in the Champions League semi-final first leg.
Their goals came in quick succession through a Pervis Estupinan own goal and Sadio Mane.
The winners will face either Liverpool's Premier League title rivals Manchester City or La Liga champions-elect Real Madrid in the final.
Is quadruple dream on?
Manchester United, Barcelona, Inter Milan, Bayern Munich, Celtic, Ajax and PSV have all won the treble of European Cup, league title and domestic cup.
But Liverpool - who have already won the Carabao Cup - are still in the running for an unprecedented quadruple.
"That's got to be the aim," said former England defender Rio Ferdinand on BT Sport.
"They are going to set themselves the target. If they achieve it, they're immortal, they are above anyone that has played the game in this country.
"Whether they can achieve it remains to be seen. But they're ticking boxes along the way at the moment."
Liverpool, who face Chelsea in the FA Cup final, need Manchester City to slip up in the Premier League. The Reds trail City by one point with five games to go.
Ex-Reds defender Luis Enrique said on BBC Radio 5 Live: "They can win all four trophies. It is nearly impossible but they have that 1% chance.
"You have to look game by game and I really believe they can do it. I have never seen a Liverpool squad like this - the players look like they believe as well."
Ex-England international Karen Carney added: "There was a period of 10 minutes in the second half where they just turned it on and that's the sign of a fantastic team, they sense the moment and take it.
"That's why they're in the hunt for four trophies because they are experienced enough to know when to do it."
BBC senior football reporter Ian Dennis said: "Liverpool have got eight games in 31 days and every single of them is a cup final. They stand on the verge of greatness."
Former Liverpool striker Michael Owen, speaking on BT, said: "Imagine it [the quadruple]. It's impossible... but now you're thinking can it happen?"
What do you think?