The Hoops skipper has missed large parts of the campaign, but his manager has now hinted that it perhaps should have been even longer.
The 30-year-old picked up a knee injury in October which kept him out for the best part of a month, and then proceeded to sustain a similar injury in his first game back in November, with The Guardian reporting at the time that he was set to miss three months of action.
However, Brown returned after just over two months on the sidelines, but has often struggled to command games in the way he was able to before his injury problems started. And Deila has suggested that the reason behind Brown's difficulties is the fact that he was perhaps recalled to the team too soon.
"He was out for three months and although he is naturally very fit, it probably takes about six weeks before you can really expect to see him fully match sharp,” he told the Evening Times.
"You could say that maybe he went back into the team early but he has a certain personality that inspires those around them. It was that which we wanted to have on the pitch because he is a winner. He leads by example."
The Hoops boss will be hoping that his assessment that Brown will need no longer than six weeks to get back up to speed proves to be accurate as his presence could prove vital to the club's chances of success as they look to finish a difficult campaign on a high note.
Celtic boast a slender lead at the top of the Scottish Premiership, and have a Scottish Cup semi-final with Rangers ahead next month, so will undoubtedly need their key players like Brown to be at the top of their game over the coming weeks if they hope to complete a league and cup double.