Gerardo "Tata" Martino has left FC Barcelona by mutual consent after enduring a trophyless season with La Blaugrana. Celta Vigo manager and former Barca player Luis Enrique is most likely to replace the departing Argentine at the Camp Nou.

It all seemed to be going so well for Martino at the start of the season. Barca won the Super Copa over eventual La Liga Champions Atletico de Madrid, and had a record-breaking start to the season. So what went wrong for the former Newells coach?

One thing that seemed to affect Barca's season most was the injuries. Almost all of Barcelona's starting eleven was injured at some point in the season, including crucial injuries to Lionel Messi, Victor Valdes and their entire back-line, which was already weakened.

Barcelona failed to end last summer's transfer window with a new center-back, which is clear to most as being the position Barca need to reinforce. Instead, they finalised the deal with Brazilian starlet Neymar.

Neymar's arrival led to much controversy, ending with Sandro Rosell stepping down as President of the club. 

There was no lack of distractions for the Catalans, ranging from the injuries and imminent departures of club legends Carles Puyol and Victor Valdes to the passing of last seasons manager and a key cog to Barcelona's recent dominance, Tito Vilanova.

Now Barcelona need to put this season behind them and look to the future, which is more likely than not, in the hands of Enrique, who has experience both as a player and manager with Barca, and has helped Celta Vigo climb La Liga this year. This could be crucial, as the fans will be looking for someone who can restore their trademark attacking, passing style of play.

Current club President Josep Bartomeu has promised big changes in the Camp Nou this year, and based on recent reports, Barcelona have already begun their overhaul. 

Borussia Monchengladbach keeper Marc-Andre ter Stegen has played his last game for the Bundesliga club, ahead of a move to the Camp Nou and recent reports speculate that Chelsea have reportedly agreed for the transfer of Brazilian center back David Luiz. 

But the changes don't stop at the manager and those two players. Barcelona will also be looking to offload some players who haven't performed in recent times, this could include players like Cristian Tello, Pedro Rodriguez, Alexis Sanchez, Dani Alves, Javier Mascherano and Alex Song. Barca can look to recall youth players Gerard Deaulofeu and Rafinha as potential replacements. 

Now the players will be looking towards the World Cup in Brazil, in which many of La Blaugrana's men will don the jersey's of their international team. Behind the scenes in Barcelona though, there will be drastic changes at the club, and who knows, the last time Barcelona finished the season without a major trophy and got a new manager, they went on to win six trophies in a single season. 

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