Berget scored just twice for Ronny Deila’s side during an unsuccessful loan spell from Cardiff City last season, but has revived his career since moving to the Swedish champions
Malmo coach Age Hareide now admits that tapping into Berget’s knowledge of the Hoops squad will be invaluable.
The 61-year-old Norwegian said: “This is a fine draw for us against a team we know we can beat.
“He knows Celtic very well after his time on loan there. We are going to find out everything about them thanks to him.”
Hareide will not, however, be picking up the phone to the Glasgow giants’ most famous Swede, Henrik Larsson.
He added: “It was a long time ago that Henrik played for Celtic so it is not likely that we will ask him.
“Celtic are a good team with great traditions. It will be tough, but fun. They’re used to winning much in the league. They are probably very hungry to reach the Champions League.
“I know some of the players so I know what they are good at doing. But I believe we have a good chance of beating Celtic.”
Malmo currently sit sixth in the Swedish league, seven points behind leaders Gothenburg after 18 games. They reached the Champions League play-off after a 3-0 home win over Red Bull Salzburg wiped out a two-goal first-leg deficit.