The Forward Ferran Torres in Barcelona operated on appendicitis, the club confirmed.
In the Clasico victory on Sunday against Real Madrid, Torres won a hat trick with assists who brought Barcelona on the sidelines of the La Liga title this season since the disease was knocked down and had a successful operation on Wednesday.
The 25-year-old will now relax and expect to miss the rest of the season.
There is only ten days before the last round of La Liga the final round of the games, but Barcelona can win the title on Thursday evening with the victory in the city derby against Espanyol.
The title La Liga was almost on Wednesday until Real Madrid scored a 2-1 victory from the fire against Mallorca and a winner of the intermediate page of unlikely scorer Jacobo Ramon.
Torres started only 12 games in La Liga and three in the Champions League this season, but his role in the squad was important. The former Manchester City player was usually the first alternative in all three positions on the front.
In this case, Torres scored very respectable goals in all competitions in all competitions. Perhaps his most remarkable performance after the Clasico last weekend was a practice as a replacement for 67th minute in the 4-2 comeback against Atletico Madrid in March.
The restoration of a removal of an attachment can take about a few weeks, which should mean that Torres was well rested by Barcelona in July by the time of the previous season.