The Argentine star is recovering well from his foot injury, but remains a doubt for the match against Celta Vigo in La Liga this weekend.
Given all of the headlines surrounding the foot injury suffered by Lionel Messi, whether it occurred in the Clasico against Real Madrid or the Champions League encounter with Manchester City, clearly his fitness was going to be a concern for Barcelona upon his return to training after the international break.
On Thursday the Catalan club announced that following their return from international duty with Argentina, Lionel Messi and Javier Mascherano both trained at the Sports City, despite being due a day off on Friday. The two players worked away from the rest of the squad with one of the fitness coaches, performing continuous running exercises around the training pitch.
According to the official Barcelona website, the inflammation suffered by Messi in his foot has reduced, which had prevented him featuring for Argentina when they took on El Salvador and Ecuador in friendlies hosted in the USA over the last week.
Argentina manager Gerardo 'Tata' Martino had revealed Messi's foot was so sore the player hadn't even been able to don his boots for training. During his running session back with Barcelona that also seemed evident, with the 27-year-old maestro donning bright red running shoes rather than football boots.
Although the club haven't made clear whether Messi will feature against Celta Vigo this Sunday, they have assured that he will be able to participate in group training on Friday, as the team prepares for their trip to Balaidos in La Liga.