Yaya Toure recently admitted it would be difficult to face former club Barcelona - but he isn't the only one.
Indeed, there are two other former Barca men that have been key in forming Manchester City's new and improved identity.
They may not have touched a football this season - but sporting director Txiki Begiristain and chief executive Ferran Soriano will be looking ahead to City's Champions League clash with Barcelona as much as anyone.
The pair of directors famously fell out with Barca president Sandro Rosell, leading to their exit from the Spanish giants, and, though Rosell has now resigned from the club after the legal complications that followed the signing of Neymar, the City duo will no doubt be desperate to show how far they have come since leaving Camp Nou.
"Very tough, we are happy because we are here and we will fight for the trophy but it’s true that it could be maybe better,” Begiristain told Sky Sports when the draw for the last 16 was made.
The sporting director has since outlined Manchester City's footballing policy for the future, one he and Soriano would no doubt have implemented at Barcelona, too.
"We want to win, but we want to win in a very special style, we want to entertain the people with brilliant football,” the City director of football said.
And what better team to prove that against than Barca?
Under Manuel Pellegrini, City have played some of the most attacking football England - let alone the club themselves - has ever seen. The Etihad, meanwhile, has been their fortress.
This Tuesday, it can be Begiristain and Soriano's fortress, as the City chiefs look to prove that their work is bearing fruit against the club at which they achieved their greatest success.
How will City fare against the Spanish Champions?
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