Pep Guardiola thanked Jurgen Klopp for his Premier League title text message after Manchester City succeeded Liverpool as champions, saying the Reds boss has pushed him to a new level.
Klopp described rival Guardiola as "the best manager in the world" in a news conference on Wednesday, the day after City secured a third title in four seasons.
The text from Klopp to Guardiola was not the only one sent from Merseyside, with Everton manager Carlo Ancelotti also sending his congratulations.
"I received a lot. He and Carlo Ancelotti have done it," said Guardiola.
"I appreciate it a lot from both of them. I could not answer messages, not yet, but I will do it today."
Speaking on Thursday, Guardiola offered a salute to the Liverpool and Everton bosses, both of whom have won Champions League and domestic titles in storied careers.
The rise of Klopp has forced Guardiola to pull out all the stops to deliver success both at City and previously at Bayern Munich, when Klopp's Borussia Dortmund were such a force.
"It was an inspiration for me. He has made me through his teams at Dortmund and Liverpool a better manager," Guardiola said.
"I would say thank you so much, I appreciate it a lot from him and Carlo."
Guardiola and City may have wrapped up the club's fifth title in 10 years, but they can still secure a host of achievements before turning their focus to the May 29 Champions League final against Chelsea.
They head to Newcastle United on Friday evening in the Premier League, and a win at St James' Park would be a 12th successive away victory for City. That would break the all-time record for the top four tiers in English football. Chelsea achieved 11 in a row in 2008 and City did so in 2017 before repeating that on their current unbroken streak of away-day successes.
City are also one short of matching the record for clean sheets achieved away from home across all competitions by a top-flight team in a single season. They have racked up 16 shut-outs so far, one short of the record jointly held by Liverpool (1975-76), Chelsea (2003-04) and Manchester United (2008-09).
Their away form has been something remarkable, with City undefeated in their most recent 22 games on the road.
That is already the longest such run by an English top-flight team, but City would also surpass the record for the top four tiers of the English game should they avoid defeat on Tyneside.
Notts County also went 22 games unbeaten away from home between February and December 2012 while in League One.