Di Canio was clearly frustrated by his side's inability to make the most of their chances with new boys Cabral and Ondrej Celustka among those who came close in a dominant opening period.
Di Canio said: "We weren't really ferocious. We have to be nasty in terms of our football.
"I don't want to say we had a clear identity but a big part of the puzzle is clear. I think we did well but it's obvious we can do much better."
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