The 31-year-old picked up a thigh injury during the Bhoys’ Scottish Cup fifth-round tie against Dundee away from home on Saturday.
Commons, who recently signed a new contract with Celtic, was substituted at half time, as they eventually won the match 2-0 to secure their place in the quarter-finals of the competition.
Deila, though, does not seem to be too concerned with his injury and is quoted as saying by Celtic’s Twitter account: "Commons felt something on the back of his thigh but I don’t think it’s serious."
Defender Mikael Lustig also failed to play for the entire 90 minutes and had to be pulled out in the 55th minute.
On him, Deila said: “Lustig has twisted his ankle and hopefully that’s not so bad either.”
Despite the injuries, Celtic did not have too many problems in getting the better of their Scottish Premiership rivals.
Leigh Griffiths opened the scoring at Dens Park after just seven minutes, and Stefan Johansen found the target two minutes into the second period.
Celtic are in great form at the moment and are finally clicking under Deila, who was appointed the club’s manager in the summer.
The Scottish giants are at the top of the Premiership table with 51 points, level on points with second-placed Aberdeen but have two games in hand.
The Glasgow-based club are also in the running to win the Europa League, having reached the last-32 stage of the competition where they will take on Italian giants Inter Milan.