Dalglish maintains Gunners fans who are losing faith in Wenger should stand by their man as the clubs prepare to do battle today.
The pair clashed on the touchline during the 1-1 draw at the Emirates in April, but Dalglish holds Wenger in high regard.
He said: "Arsene Wenger has been fantastic for the football club. When they were in a bit of trouble he guided them through it.
"He has sold brilliantly. He has also got the best value for his club."