Speaking to reporters after the match, the 39-year-old said: "We are disappointed with the result. I didn't feel we deserved to lose the game but that's what Sheffield United are, they are a very efficient team, good in both boxes, and that's what they have done again today.
"I thought a lot of our play was good. We controlled the game for large portions of it and then missed opportunities where I feel we can do a little bit better. Performance-wise was good but the result very disappointing."
He added: "It was a better performance, I think that's clear for everyone to see. I thought it was a really good reaction to going a goal down. I felt as the game was going on we could potentially get something out of it, and then it opened up a little bit towards the end and Sheffield United broke and got a penalty, and then the game was done then really. From our point of view I think there were lots of positives for us to look at but also things for us to improve on. I always talk to the players about details - passing it to the right foot, what type of cross you put into the box, little things like that. If we can do that, we will be okay."