Well, this is the common thing that happen in most football game after the last whistle's blown.

Players keeps the exchanged jerseys with them. Sometimes they sell them in some auction to raise money and donate the same for charity.

This is Lionel Messi’s “jersey room”. Here is where he keeps all the shirts that he has collected over his years as a player. Many here are easily recognizable.

There are many more players that do this. It’s really interesting, seeing all of these in the same place, knowing that all of them were once on the backs of legends and great players.




https://www.quora.com/What-do-soccer-players-do-with-the-jerseys-exchanged-after-a-game

for future purpose that i played with or against so so person

I think it's just for the memory. Souvenir I must say!