"From what I have seen in training everyone has been working hard to get themselves in his plans," added the 32-year-old, who was ill last week but had Coyle on the phone to him regularly.
"There are certain players under the previous manager (Gary Megson) who were frozen out and you could see their confidence draining away.
"Now I have seen a big change in some of the players: from the lads who have been starting to those on the fringes and those training with the reserves.
"I have been really impressed with the way the players have responded to him and I think that is a credit to him.
"Speaking to players individually they have been impressed with his man-management skills."