Indeed, Man City were victorious in the League Cup final at Wembley Stadium, beating Liverpool on penalties after a 1-1 draw over 120 minutes.
Celtic themselves won't be tasting Scottish League Cup glory this season, having been knocked out at the semi-final stage (although they are still in the Scottish Cup).
The hero of the hour was an unlikely one in Willy Caballero, the Manchester City reserve goalkeeper who shone despite putting in a disastrous display at Chelsea a week prior.
And Celtic forward Roberts praised him on Twitter, as well as celebrating City as a whole:
Roberts's loan club fared slightly worse than his parent side over the weekend, drawing 1-1 at Hamilton on Friday night to drop points in the race for the Scottish Premiership title.
But Manchester City have plenty to celebrate after a famous Wembley win.