The Bosnian has brought an increased physical presence and passion to Arsene Wenger's side since his summer arrival.
In his weekly column for the BBC, Crooks wrote: “Sead Kolasinac is built like one of those North London brick toilets that withstood bombing raids during the Second World War.
“Even after the most awful tackle by my defender of the year last season, David Luiz, he rose to his feet determined to finish the game.
“The way Luiz overran the ball in an attempt to draw Kolasinac into the challenge left me in no doubt that the Chelsea defender knew exactly what he was doing. In my view, he wanted a piece of Kolasinac."