Ferguson said: “We said from the start we were not rude enough to ask Helsingborgs for him to stay. They were very good in allowing Henrik to come here and arranging the deal.
“Henrik also made sacrifices because he has a young son at school and we have respected that. We just appreciate Helsingborgs allowed us to keep Henrik for the short time we had him because he is such a fantastic professional.
“There is nothing big about him. He won the Champions League last year but he has come into the club and just got on with the job.
“I have nothing but praise for him. He goes back with great respect from everyone in the club and leaving some great memories for the fans.”
Ferguson believes Larsson’s departure won’t have a negative effect on their title chances.
He said: “Henrik has been terrific but his leaving won’t have a negative effect.
“The timing of his spell here has actually been tremendous because Louis Saha picked up a little injury in December and now he is flying again.”