Celtic defender Charlie Mulgrew has told the Daily Express that it took time to get used to life under manager Ronny Deila.
Deila, 39, was the surprise choice to replace Neil Lennon as Celtic boss last summer, and arrived having impressed in his native Norway with Stromsgodset.
However, Celtic's early season form suggested that the Bhoys may have made a mistake, with Champions League defeats to Legia Warsaw and then Maribor ending Deila's hopes of reaching the group stage.
Now though, Deila has proven himself to the Celtic faithful by not only winning the Scottish Premiership title, but also the Scottish League Cup in a double-winning campaign.
Those initial struggles have been forgotten thanks to his eventual success, and defender Mulgrew has told the Daily Express that he knew it would take time to adjust to life under Deila - but now the whole squad are used to his demands.
"We knew it would take time with the new manager but reaching the end of the season, everyone was used to the training and knew what he wants from us," said Mulgrew. "That can only help us going into these games," he added.
Champions League qualification - a must?
After last season's struggles in the Champions League, Deila is now under some pressure to get Celtic to the group stage.
A qualifier against Icelandic side Stjarnan is on the horizon, and whilst Celtic are expected to get through that, bigger and better teams will be waiting for them down the line.
Deila needs to get Celtic to the group stage in order to banish the memories of last year, and the squad's familiarity with the manager should certainly help them this time around.