In a relationship that has had decidedly more low than high points, Arsenal's Arsene Wenger has chosen to wade in on Jose Mourinho's recent comments regarding Manchester United's financial disadvantage.
Although a mixed demonstration of his own capabilities also, Wenger was quick to remind Mourinho that his spell at Arsenal has coincided with a constant disadvantage financially:
I have been in that position for 21 years so I will not start to complain now.
I have always had one team at least - sometimes four - who were richer than I was, so I learned to cope with that and deal with that.
Often scrutinised for not spending more copious amounts of money when it was assumed that such funds were available to him, Wenger clearly found it humourous that Mourinho, the manager of the world's richest club according to Deloitte, was complaining about a lack of spending-power.
Having previously been in charge of Chelsea, where he oversaw an enormous spending policy brokered by owner Roman Abramovich, Mourinho can hardly expect much sympathy:
What is most important is that you deal with your own situation as well as you can and, yes, Manchester City are richer than us and, yes, Chelsea is richer than us and, yes, Manchester United are richer than us.
But I still believe we have to find a way to be successful.
Although Mourinho is correct in suggesting that Manchester City have adopted a spending policy under Pep Guardiola that is verging on the ludicrous, the Catalan's on both individual players and the team generally has been incredible.
Bringing something of Wenger's impetus on how you "find a way to be successful", the occasionally average performances and sense of disarray surrounding Mourinho's United has not won him any new admirers in his 18 months with the club.
Undoubtedly though, any excuse for another war of words with Wenger is not going to be overlooked by the Portuguese.
We wait anxiously.