Jose Mourinho and Pep Guardiola have never been the best of friends during their managerial rivalry.
But the same can't be said about some of their respective Tottenham Hotspur and Manchester City players - and proved by a spectacular incident ahead of kick-off on Saturday evening.
On the Spurs bench for the Premier League clash was summer signing Joe Hart as Mourinho, as expected, went with club captain Hugo Lloris in between the sticks.
And amongst the Man City substitutes was John Stones who went into the game in north London having not made a Premier League appearance since the 3-1 win over Wolves back in September.
Hart and Stones played alongside each other numerous times for the England national team and clearly became very good friends whilst on international duty.
It was a case of friends reunited before the game kicked off in north London.
In addition, Hart was seeing some old faces from his time at the Etihad Stadium, but there was a rather special moment between the Spurs back-up goalkeeper and Stones.
As spotted by the Sky Sports cameras, the two players enjoyed a light-hearted mini wrestling match in the warm-up.
Hart would have the last laugh come the final whistle.
Goals from Son Heung-min and Giovani Lo Celso in either half gave Spurs a 2-0 win which means they will spend the night as the Premier League leaders.
Next up for Hart and company is a Europa League group phase clash against Ludogorets on Thursday.
It remains to be seen if Hart gets a rare start, especially as Hugo Lloris could be rested ahead of Spurs' massive game against Chelsea in the Premier League three days later.