The result set up a showdown at the second leg of the UEFA Champions League semi finals at the Etihad next week.
But Guardiola yelled from the sidelines for the 22-year-old Haaland to take the penalty kick they had been awarded in the closing minutes.
The signs are ominous as they struggle to build a new team in the wake of record sales last year.
Osimhen, Serie A’s top scorer this season with 21 goals, has missed this month’s league games against AC Milan and Lecce due to a thigh strain.
The move marks a return to Stamford Bridge for Frank who enjoyed an illustrious playing career with the Blues.
Haaland missed two Euro 2024 qualifiers with Norway and Manchester City’s 4-1 league win against Liverpool over the injury.
City are chasing their first-ever Champions League trophy but will have to navigate past another German team in the knockouts if they will remain in contention.
Bayern Munich have now advanced to the last eight on a 3-0 aggregate and maintained their perfect record in the competition.
Chelsea have progressed to the quarter-finals of the UEFA Champions League following a 2-0 win over Bundesliga side Borussia Dortmund.
On Wednesday, we have an extremely important game,” coach Julian Nagelsmann said.
