Wolverhampton Wanderers were beaten 1-0 by West Ham United at the weekend.
Although Wolves were beaten 1-0 by the Hammers, Sigurdarson still impressed with his performance up front.
The Iceland international caused West Ham’s defence a number of problems, in what was his first Wolves start for over two years.
And Edwards said to Wolves' official site: “I think everyone who was at the game will have seen how well Bjorn did.
“It was probably the best I have seen him play in a Wolves shirt.
“He is a big, powerful boy and he worked that line really well.
“He was turning nothing balls into something and gave James Collins and Winston Reid a tough time.
“He won his headers, held the ball up well, and was full of energy."
Unfortunately for Sigurdarson, his afternoon was cut short after he picked up an injury in the 57th minute of the match.
He was replaced by Adam Le Fondre, and had to watch from the treatment room, as his side fell to a late defeat.
West Ham won the tie when Nikica Jelavic scored a well-taken goal to put his side into the fourth round.
Sigurdarson will be hoping that his injury is not too serious, as he is playing for his Wolves future.
The 24-year-old has just six months left on his contract at Molineux, but he could be set for a run of starts, following Benik Afobe’s departure to Bournemouth.