The Inter Miami star remains at odds with Barca president Joan Laporta after he was pushed out of the club in 2021.
Font, who will challenge Laporta at the 2026 presidential election, stated: "The first call I'll make when we win the elections will be to Leo Messi. It will be the first call I make.
"Personally, as a Barcelona fan, he gives me goosebumps, but what we shouldn't do is try to use him.
"I think Laporta did it, and he's done it many times, and I think he made a mistake; the most glaring example was during the elections."
Messi visited the renovated Nou Camp last week, without the knowledge of Laporta nor any of his fellow directors - in a sure sign of issues remaining between the club and the Argentine.
