Maddison (undisclosed) is a late call for Tuesday's clash against Chelsea after missing training early in the week with a small problem before returning to full sessions, according to coach Roberto De Zerbi. "At the beginning of this week he didn't work for a small problem. But yesterday and today James worked very well. He is a different player, a special player. Now he is not ready to play 90 minutes. I want to speak to him tomorrow morning and take the best decision we can."