Carragher wrote off the Swede in the early months of this season.
But after his double in victory at Tottenham on Sunday, Carragher told Sky Sports: “The thing I like about Viktor Gyokeres is his mentality.
“I don’t think he’s a world-class striker or an amazing striker for Arsenal for the next five or years.
“But I absolutely love his mentality. There’s no lack of confidence with him, he just gets the ball and bangs it in, it’s Alan Shearer-like, that sort of mentality.
"Credit to the manager. I felt they had to come away from Gyokeres and I thought at some stage it might cost them.
“But the manager has stuck by him week after week and the strength he showed in this game, it was very Alan Shearer-like.
“We were looking at the strikers Arsenal had and I felt he was quite far down the pecking order. And a few times I was quite surprised that Gyokeres was still in the team.
“But fair play to the manager because he’s kept him in and he’s repaid him in one of Arsenal’s biggest games of the season.”