The French forward is poised to complete his move from Lyon to The Emirates this evening in a £52m deal.
The former Liverpool boss thinks Lacazette is just like Gunners great Ian Wright.
Houllier understands why Arsene Wenger wants the France international in his team.
And Houllier thinks Lacazette will guarantee goals for the Gunners.
He told talkSPORT: "He is very mobile, very quick, good in short spaces, has good skill and he scores goals.
"He was the top scorer in France in 2014-15, the best player in the league in 2015 and has been the best French scorer over the last three seasons.
"He scores more than 25 goals every season.
"One thing he will bring to Arsenal is goals. His main asset is to score goals.
"He has good technique, good at using short spaces and is a hard-working player.
"He can attack, he can defend quickly. I'm not surprised Arsene fancied him.
"He will fit in their game. He will suit their passing game, the way they build up, their approach. He is very good near the box.
"He is a bit like Ian Wright really. You don't seem to see him and then suddenly he moves."
