The Blues are 14th in the table at the halfway point and one of the manager's biggest disappointments has been not being able to use his summer signings regularly due to a string of injuries or suspension.
"I've been pleased with certain elements of it," he told the City website. "A little bit frustrated with a few performances, although very pleased with some
"We will need to do better in the second half of the season.
"I'm disappointed that a few of our new signings have not consistently been able to feature on a permanent basis due to injuries and suspension," he added.