 Having previously made a handful of appearances in Danish Cup games, including being part of the Nordsjælland Cup-winning team in 2010–11, Okore made his league debut against Horsens on 3 April 2011, coming on as a substitute for Michael Parkhurst.Okore would continue to making first-team appearances in place of the injured Parkhurst for the remainder of the 2010–11 season, going on to make 11 league appearances and creating one assist.Okore signed a new four-year contract with the Farum-based club in June 2011, and was made an official member of the senior squad for the 2011–12 Superliga season by newly appointed head coach Kasper Hjulmand.