He was training individually on Monday and on Tuesday due to the La Liga strict rules.
Thankfully, the captain is now cleared to train alongside the fellow teammates.
Messi is joined by Philippe Coutinho, Sergio Busquets, Ansu Fati and Frenkie de Jong.
Just like Leo, the Brazilian used to work on his own due to safety regulations.
As for the other three, they have just returned from international duty.
Enjoy the pictures from Wednesday's session, provided by Barcelona's official website:
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