Terrible news for FC Barcelona, as they may be pushed to sign a new defender during the winter because Samuel Umtiti got a knee injury and will need surgery.It appears that defender problems keep piling up for FC Barcelona this season, Gerard Pique’s dip in form was enough and Samuel Umtiti has been confirmed with a knee injury that will require him to undergo surgery.The French centre-back had been suffering pains on his left knee with a clear problem on his cartilage that he had since before the World Cup and now the pain was too great to ignore from the club, the player needed to undergo tests that confirmed he will need to undergo surgery and will take him out of any competition for at least the next 50 days.The Catalan club has urged the player to get that operation as soon as possible because they will want him to get back in training after the next international break, but the doctors have already warned the club that the player may need a little more time than that to completely recover.This terrible news for Barcelona come just one day before a very important La Liga match against Athletic Club, and a few days before they have to visit Tottenham Hotspur at Wembley Stadium in the Champions League.Manager Ernesto Valverde confirmed that the player will miss the next match and didn’t disclose the possible surgery, mainly because the club is still hoping that Samuel can recover only with rest but the doctors have already adviced the opposite.This new development leaves Barcelona with options that have alarmed all the supporters, because they consider the club practically doesn’t have good enough players for the next two months.🎯 pic.twitter.com/L3R7lsc68z— Gerard Piqué (@3gerardpique) September 5, 2018Gerard Pique’s role without UmtitiWe’ve already discussed Gerard Pique’s dip in form that has made him commit terrible mistakes in the last two matches against Girona and Leganes, the club desperately needs him to increase his performance level because Umtiti was their defensive player who was delivering the best performances thus far.With this unexpected setback, it should be Pique’s time to get back in focus and get rid of all the distractions that have kept him from reaching his best level of performance that we all know he can deliver. This Saturday’s test becomes one of the most challenging for Pique and Barcelona, especially with the mindset he will have at the start of the match against Athletic Club as he has been under serious backlash in the last couple of weeks.There is no excuse for him right now, either he steps up to perform or his club will lose very vital points that they desperately need to win this weekend because of the Madrid Derby where one of their direct competitors will surely drop points at the Santiago Bernabeu later during the day.Top 10 players who played for both Barcelona and Valencia Boro Tanchev – September 14, 2019 Time to talk about the best players who represented both Barcelona and Valencia, prior to their La Liga encounter at Camp Nou this evening.On paper, Gerard Pique is without question one of Barcelona’s best players and this is the best moment in which he is going to have to prove that now that Samu is not available for the next few matches. But the Catalan club has another problem, that is the defender they will have to use to replace Umtiti, their options are quite limited and alarming as well.💪⚽ Play hard, work hard @clement_lenglet #ForçaBarça 🔵🔴 pic.twitter.com/ioZ0WKIsmO— FC Barcelona (@fcbarcelona_fra) September 12, 2018Lenglet and VermaelenThe first and most obvious option to replace Samuel Umtiti during this time he will be injured, is his compatriot Clement Lenglet who just came back from a suspension after getting sent off in the match against Girona. There shouldn’t be a problem with the former Sevilla player, he should be able to play instead of Samuel without an issue.The only thing he needs to control a little bit better is his temper, which was the reason he received that red card that fortunately didn’t carry a longer suspension. The other option is Belgian defender Thomas Vermaelen, who is perhaps one of Barcelona’s most failed transfers in recent history and somehow has managed to remain in the Catalan club despite hardly ever playing any games.During the last match against Leganes, Ernesto Valverde decided to give Thomas his first start of the season and the result couldn’t have been more disastrous. Barcelona lost the match and Vermaelen made an awful pair with the also mentioned Gerard Pique, it’s unlikely that the manager will give him another chance for this game against Athletic but Vermaelen needs to improve his level if he wants to help out the squad during such difficult times.As far as tomorrow goes, Valverde will use Pique and Lenglet if nothing extraordinary happens, but everybody at the club is nervous for what might happen against the likes of Iñaki Williams or Iker Muniain at the Camp Nou.[📋 SQUAD LIST]⚽ #BarçaAthletic🔵🔴 #ForçaBarça pic.twitter.com/ggjbAAuMdc— FC Barcelona (@FCBarcelona) September 28, 2018Which two defenders should Valverde use against Athletic Club in your opinion? Please share your thoughts in the comment section down below.