Norwegian midfielder Bobb, whose talent has been nurtured in City’s academy, played 26 senior games in all competitions last season, including two starts in the Premier League.
City were on the verge of losing for a fourth successive year in the Community Shield – the match that traditionally is contested by the league champions and FA Cup winners.
Alejandro Garnacho, who scored in United’s 2-1 FA Cup final win over City, netted again at Wembley in the 82nd minute before Bobb showed great skill to create space and cross for Bernardo Silva to head an 89th-minute equaliser.
“It’s a great feeling, first time we have won it in three, four years and to do it with a young group is great,” said Bobb. “We had belief all the way through. We kept going, didn’t get too downbeat.”
Former England striker Ian Wright, speaking on ITV, called Bobb “one of the most exciting youngsters in the game” and added: “When he gets it under control, he goes from zero to very quick.
“He was the one that was committing people and anything really positive was coming from Bobb.
“When you get someone who wants to take players on, it gets people off their seat.”