Ilkay Gundogan has named Manchester City as the best club in the world. The German midfielder said this after re-joining the Premier League champions from Barcelona on Friday. Gundogan left Pep Guardiola’s side for Barcelona last year. Speaking to Man City’s website after returning to Etihad, the 33-year-old said: “I’m incredibly happy. “Happy to see the team-mates, the staff, people that over seven years I had an amazing time with, a very successful time with. Many ups, a few downs, but in general, an incredible experience. “You realise how big the club is—the best club in the world.” Ilkay G…