Sigurdarson appeared to be heading towards the exit door at Molineux, but the Icelandic international has had a resurgence of late.
The striker has made four appearances for Wolves since December, and he started in Jackett’s side’s 0-0 draw with Reading at the weekend.
Although the 24-year-old is still yet to open his goalscoring account for the season, Jackett has been impressed by Sigurdarson’s form, and has suggested that his future could be bright.
“He has built up gradually and it was going to be that way after being out for such a long time," Jackett said.
“Right now I see a hungry player and that is a very good sign for the future.
“It was his first full game for a while and he looked strong all the way through.”
Prior to this season, Sigurdarson had not played for Wolves since the 2013/14 campaign - after being sent out on loan for the past two years.
His return has been welcomed by Wolves fans, as he remains a very popular figure at the Midlands club.
Sigurdarson is under presusre to continue his good run of form for Wolves, as his contract with the club expires in the summer, meaning that he is currently playing for his future at Molineux.