By Danny Mills

18th Oct, 2021 | 7:00am

Mills: Postecoglou has major problem on his hands after confirmed Celtic dressing room reveal

Ange Postecoglou may have a problem in the Celtic dressing room, according to Danny Mills.

Speaking exclusively to Football Insider, the ex-Premier League and England defender claimed the attitude of the players under Neil Lennon will be hard for Postecoglou to change.

Lennon told the Scottish Sun (October 10) some players refused to play last season despite being fully fit.

The club were on the verge of winning an unprecedented 10th league title but they finished the season 25 points behind eventual unbeaten champions Rangers.

Lennon left Celtic at the end of February with John Kennedy taking temporary charge until the end of the season.

Postecoglou was appointed over the summer after they failed to finalise a deal with Eddie Howe after protracted negotiations.

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Asked whether the attitude in the Celtic squad will still linger despite a change in manager, Mills Football Insider correspondent Connor Whitley: “It’s difficult.

“Once that sets in, it’s very difficult to change that mindset. If that’s senior players it’s tough to change those sorts of attitudes.

“Whether that’s a personal thing with the manager then that’s a little bit easier to change. But I think Neil Lennon was well-liked.

“However that’s come about, it’s not a good thing. It makes the new manager going in even harder. Not only do you have to get the players performing, but you’ve also got to change their attitude as well which is tough.”

Celtic have had a mixed start under Postecoglou, they currently sit in fourth, four points behind leaders Rangers.

They were also knocked out of Champions League qualifying by Midtjylland in August.

In other news, a Celtic summer signing is facing the axe after a source’s update.