Jurgen Klopp spoke to Pep Guardiola on the phone after Liverpool's Champions League Final success.
The Reds won their sixth European Cup on Saturday night as goals from Mohamed Salah and Divock Origi saw off Tottenham .
It secured a first trophy at Anfield for Jurgen Klopp after several near misses in cup competitions during his tenure.
Liverpool also came within a point of winning the Premier League as they were pipped to the post by Manchester City , despite racking up an incredible 97 points.
Speaking in his post-match press conference, Jurgen Klopp revealed one of the first people to congratulate him was the City boss.
And he revealed the pair made a vow ahead of next season, which promises to be as enthralling.
“A second ago I spoke to Pep Guardiola on the phone. Our head physio (Lee Nobes) worked for Manchester City at the start of the year but he wanted to win the Champions League... no, it's a joke," Klopp said.
“We promised each other that we will kick each other's butts again next season. We will go for everything and see what we get.
“Getting 97 points in the Premier League and winning the Champions League is an unbelievable long way to go and we did it. That's incredible.
“Now we've won something, we will carry on. We will win things. That is big. I am really happy.”
Klopp admitted the victory in Madrid was his best night as a manager, having lost twice previously in the final.
Liverpool were beaten by Real Madrid in Kiev a year ago while Klopp also tasted defeat to Bayern Munich while at Borussia Dortmund.
