The Uruguayan enjoyed huge success with the World Cup winner during their days at Barcelona, winning four LaLiga titles and a Champions League in six years (2014-20).
Both players are in the twilight years of their respective careers at 36 years old but they're set for one final adventure together. Suarez will also reunite with former Barca teammates Sergio Busequets and Jordi Alba.
The Athletic, who broke the story, says nothing is sorted yet as clubs are only allowed three Designated Players - on their roster whose salaries exceed the league's Maximum Salary Budget charge, which this year was at $651,250.
However, it's understood Major League Soccer will discuss potential roster rule changes this winter.
Messi, Busquets and Brazilian defender Gregore finished last season as Miami's DPs, though Miami can buy down Gregore to free up a spot if they so choose.
READ MORE ON LIONEL MESSI
Messi named Time's Athlete of the Year and joins influential names with iconic honour
Lionel Messi net worth: Inter Miami star's earnings include MLS wages and endorsements
Should Suarez's Miami move materialise, his son, may feel somewhat aggrieved given the former Liverpool forward's inability to enjoy a kickabout with him.
"The day before each game I take three pills and hours before playing I am injected (with anti-inflammatory)," Suarez has been quoted saying by ESPN.
"Now I can tolerate this osteoarthritis, but I have to think that in five years I may not be able to play five-a-side football with my friends.
"The truth is that the first steps in the morning they are very painful. Anyone who sees me thinks its impossible for me to play a game.
Most read in Football
Amazon Prime fixtures this week, kick-off times and how to watch games for FREE
Maddison names one Arsenal player he'd love at Spurs - 'I hate that he plays for them'
Man United release statement after journalists 'banned' from press conference
Chris Wilder back at Sheffield United but faces Premier League fixture list from hell
"My son asks me to play with him and I can't."
Lionel Messi beaten to MLS MVP as FC Cincinnati midfielder Luciano Acosta claims landslide victory