The Chilean international left Udinese in the summer of 2011 for the Nou Camp. He's shown flashes of brilliance, but he's found it difficult to break into the Barcelona first-team set-up on a consistent basis.
A poor run in front of goal earlier this season prompted speculation that he could be set for a move abroad, with Arsenal and Liverpool reportedly interested.
And Larini feels his former player would flourish under Arsene Wenger at the Emirates Stadium.
Larini told Tuttomercatoweb: "I do not know his current situation at the Spanish club. But his fitness problems have definitely limited his performances.
"The only thing that these teams will have to consider is that he is a player who needs freedom to play his way. In team that have particularly rigid patterns of play he might have a few problems.
"Sanchez needs to play the ball on the ground, just like Arsenal. That would be his ideal game."
The 24-year-old, according to the report, has been tipped to leave Barcelona in the summer, and he would be sure to spark a transfer scramble should he become available.
The Chilean international was one of the hottest prospects in the world when he was at Udinese, with Europe's top clubs chasing his signature.
Barcelona won the race, but Sanchez has found it difficult to hold down a first-team spot.
Lionel Messi, Pedro, David Villa, Andres Iniesta and Christian Tello are all competing for three spots in the Barca front-line, and although a regular substitute, Sanchez has found it tough to break through.