Lionel Messi was just hit with a fine for his in-game tribute to late soccer legend Diego Maradona -- but it only amounts to $725.
... which is NOTHING to a rich guy like Messi.
The 33-year-old captain paid homage to his fellow Argentinian after scoring the final goal in Barca's 4-0 win over Osasuna on Sunday ... by ripping off his shirt to reveal a Maradona #10 jersey from his Newell’s Old Boys days.
It was an emotional moment for Messi ... who blew a kiss to the sky and hugged his teammates following the goal.
The tribute drew a yellow card due to Messi removing his shirt ... which resulted in a 600 euro fine handed down Wednesday. Messi can appeal ... and given the circumstances, he may have a shot at getting the decision overturned.
Messi was close pals with Maradona ... and grieved the loss after his passing on Nov. 25.
"A very sad day for all Argentines and for football," Messi said at the time. "He leaves us but does not leave, because Diego is eternal."
"I keep all the beautiful moments lived with him and I wanted to take the opportunity to send my condolences to all his family and friends. RIP."