Guardiola’s side progressed to the last eight of the competition 4-0 on aggregate after the win, and the Catalan singled out Gundogan for special praise in his post-match interview.
“He’s always had a sense of [where the] goal [is], playing for [Borussia] Dortmund,” Guardiola told reporters.
“He’s an incredibly nice guy. He’s one of the… I will never forget the time we spent together. As a player he is one of the most intelligent, wisest players I have ever trained, I have ever seen.
“This season, every time he has arrived near the goal, he has scored the goal, he has this quality but not just that. I’m so delighted with the performance from Ilkay again and from all of the team.”
Gundogan has played a crucial role in City’s success under Guardiola since joining the club in 2016, but was primarily known for his skills as an enforcer in midfield prior to the current season.
Guardiola has deployed the German further forward as his team have embarked on their latest pursuit of silverware across multiple fronts, and he has rewarded his manager’s faith by delivering the goods week in, week out.
The 30-year-old is now being mentioned as a leading contender for the PFA Player of the Year award, as City continue their unprecedented quadruple bid.
Gundogan was at his best once again in both attack and defence as City saw off Gladbach in Budapest.