The Bhoys are on course for a league and cup double this season, but Izaguirre has explained to the Daily Record why they started the season in a stuttering manner.
“Yes, it was a difficult start to the season,” the Honduran left-back said. “We had a new coach and in less than a month we had to get to know each other and what he wanted from the players.
“It was difficult at first because we’d played under one coach for four years and were used to his system. Deila changed it around but the bad start didn’t put us off.”
Although Izaguirre has played up Celtic’s difficult start, they actually did not struggle too much in competitive fixtures.
They lost their Champions League place, after a draw and a defeat to Maribor, whom they played only after Legia Warsaw had their place revoked after a clerical error - having lost twice to the Polish side.
Ronny Deila certainly started the Premiership season in fine form, with just one defeat in his opening eight games, including three wins in a row in his first three games - scoring 10 goals and conceding just one in the process.
The season has progressed in much the same manner, and after claiming the Scottish League Cup as their own, a double is very much on the cards, with Inverness CT defeating the Bhoys in the semi-finals of the Scottish Cup.
A treble is now but a dream for next season, but the improvements that Deila has made suggest that it may not be a dream for long. There is a real positive mentality about the Celtic squad, and they are playing good forward-thinking football, with a strong defence and a youthful core.
The future looks bright for the club, and although Deila struggled in his opening weeks as he changed the club’s playing philosophy, all his changes appear to be paying off with great rewards.