Off the field, the impact of Lionel Messi joining Inter Miami in Major League Soccer (MLS) is already starting to pay off financially. To launch his own sandwich at Hard Rock Café locations and some Hard Rock International casinos, the Argentine soccer sensation has partnered with the chain. The "Messi Chicken Sandwich" is apparently now available at Hard Rock eateries. As a result, guests can enjoy the cuisine that makes Messi happy whether they're eating in Miami, Barcelona, or any of the other Hard Rock restaurants across the globe.