Sanchez, Thiago return to Barça training
"Both players are recovering satisfactorily from their respective injuries and trained alongside their team-mates at Camp Nou," the club said on their website.
Sanchez sustained a tear to his right adductor muscle in a La Liga match against Sporting Gijon, while Thiago injured his right shin, causing both players to miss the 7-1 thrashing of Bayer Leverkusen in the UEFA Champions League last week.
French left-back Eric Abidal also returned to training after injuring his right hip in France's 2-1 friendly win over Germany at the beginning of the month, but he is not yet ready to resume training with his team-mates.
Barça have qualified for the Champions League quarter-finals, but remain ten points Real Madrid in La Liga, ahead of Saturday's trip to Sevilla.