FRANK Fielding said "nobody was happy" in Millwall's dressing room after Neil Harris' shock resignation last week.
Fielding said he "couldn't believe it" when he received news of Harris' departure in the players' WhatsApp group.
Harris signed Fielding on a free transfer from Bristol City in the summer and the goalkeeper started the season as No.1.
But Fielding injured his quad on the opening day against Preston and is hoping to return to training next month.
Harris and his assistant Dave Livermore stepped down last Thursday.
"I was sat on the settee and one of the boys put it in the group and I couldn't believe it to be honest," Fielding told Love Sport Radio.
"It's come as a surprise and I wish him the best. He's a proper bloke, top bloke, family man.
"He was pivotal to me coming to Millwall in the summer, he really wanted me.
"He spent time with me on the phone and told me what he expected of me and what he wanted of me and I'm absolutely gutted, obviously.
"The decision came at his reckoning and we have to move on.
"You know what football's like. Usually when someone leaves there's a couple of lads who are happy, some are unhappy, some don't really care.
"But I can tell you one thing – nobody in that dressing room was happy.
"It just goes to show what everyone thought of him at Millwall."
Image: Millwall FC