In the middle of a match, a symbol will sometimes appear against a player... it's two circular arrows, one read, one green.

I assumed it meant the player should be substituted, but that player is usually still in good health. The symbol often appears against the player that has come on.

Shame they didn't put this in the instruction leaflet.

yeah substitution is what it means....

IT MEAN They are way to exhausted and despertly need to be subbed lol seems your using turbo way to much.

Hey, I'm managing Brentford... I have to use the turbo otherwise they'll never outrun anyone :)

you'll also see it when a player gets a yellow card too