"Change to the squad".
In the photo, Messi accompanies the picture with the following message: "Welcome Ciro!" Thanks to God everything went perfectly.
Yerry Mina - a January signing from Palmeiras - has been brought in as Messi's replacement and is likely to feature on the substitutes' bench. "We are very happy".
Steph Curry sprains ankle, Durant steps up
He had to sit out of 11 games earlier this season after he sprained his right angle during the game against the Atlanta Hawks. Making matters worse for the Warriors , they are coming off a grind-it-out 110-107 win over the Spurs on Thursday night.
Barcelona said early Saturday that Messi would miss a match at Malaga later in the day for "personal reasons". He has started 26 of Barca's 27 games, while he came off the bench against Espanyol on February 4.
Ciro is a younger brother to Messi's sons Mateo and Thiago, about whom Roccuzzo regularly posts on social media.
Barcelona tops the table of La Liga with 69 points, ahead of the second-placed Atletico Madrid (61 points) and the third-placed Real Madrid (57 points).
Valverde's side have opened up an eight-point lead at the La Liga summit and remain well on course to return the Spanish top-flight crown to Camp Nou.