Lionel Messi has sent shockwaves through the football world after posting a deeply reflective, emotional message to his Instagram account, igniting intense speculation that the legendary forward is preparing to call time on his iconic international career.

Following Argentina's clash vs Spain, the eight-time Ballon d'Or winner took to social media to pen what reads like a heartfelt farewell to his team mates, coaching staff, and the millions of fans who have followed his journey with the Albiceleste.

Instead of highlighting the historic silverware he has accumulated, Messi chose to focus on the deep personal bonds and adversity overcome behind closed doors.

"The best part of all these years wasn't just the titles, but the entire journey," Messi wrote. 

"Sharing the day-to-day with this group, competing together, picking ourselves up during tough times, and enjoying every step of the way."

The talismanic captain extended his profound gratitude to the entire setup, thanking his peers and the backroom staff who work tirelessly "to ensure this national team remains a family”.

As fans around the globe braced themselves for what could be the final international chapter of the undisputed G.O.A.T., Messi emphasised that the legacy of this current generation is already set in stone, completely independent of their result.

"No matter what happens tomorrow, this group has already written a story we will never forget, one that no one can erase," Messi stated

Whether the just-ended clash served as a triumphant final bow or a stepping stone to one last dance if there is, Messi’s words capture the mindset of a player who knows he has achieved football immortality with his country.