FIFA's decision to suspend the transfer ban placed on Barcelona while an appeal is heard has given the Spanish giants some much needed time to rebuild their ageing squad.
With goalkeeper Victor Valdes and club stalwart Carles Puyol announcing their intention to leave at the end of the season, summer reinforcements are vital if Barcelona are to return to the pinnacle of European football.
Here, Press Association Sport's David Lee takes a look at five players they could sign in the summer.
The Tottenham defender could be the perfect solution to Barcelona's worrying defensive deficiencies. With the 36-year-old Puyol set to leave at the end of the season, Barcelona are extremely light in the centre of defence.
Javier Mascherano, a midfielder by trade, has filled in for a long time but a club of Barcelona's stature need a natural defender of international quality. While Barca have long been linked with Chelsea's David Luiz, the answer could perhaps lie across London, where Vertonghen is reportedly disenchanted with life at Tottenham.
The Belgium international has made no secret of his desire to play Champions League football, something the North London club will not be able to offer the defender next season. Vertonghen has the composure and passing range to slot into Barcelona's footballing philosophy.
Marc Andre ter Stegen
Victor Valdes' decision to leave the club when his contract expires this summer has hastened the need for Barcelona to sign a new goalkeeper. A deal has reportedly been agreed for the 21-year-old German goalkeeper who has been hugely impressive for Bundesliga side Borussia Monchengladbach this season. Ter Stegen has been an integral part of Monchengladbach's tight defence, with the Europa League challengers currently boasting the fourth least goals conceded in the league this season.
Often overshadowed in the headlines by Dortmund's prolific striker Robert Lewandowski, Reus has developed into one of Europe's hottest properties in the last two seasons.
The German winger has it all. He dribbles past players with ease, boasts an incredible work ethic and scores goals. The 24-year-old has notched five Champions League goals in nine appearances this season, including two against Barcelona's arch-rivals Real Madrid in the Champions League quarter-finals.
Barcelona have already agreed a deal to sign the Dinamo Zagreb midfielder Halilovic for a reported fee of 2.2million euros (£1.8million). At only 17, the Croatian starlet is one for the future and will start his life in Spain playing for Barcelona 'B'.
However, Zagreb have a habit of producing world-class players. Real Madrid's Luka Modric also started his career with the them, and if Halilovic's career is anything like that of his compatriot Modric, he will prove a bargain.
Most at home in a central attacking position, Halilovic's natural eye for a pass and direct style could see him become a future star of Spanish football.
Following Atletico Madrid's astounding season, the vultures have already started to circle around the Vicente Calderon.
Koke has been the subject of much attention and in many ways the 22-year-old would be a perfect fit at Barcelona. The Spaniard offers versatility across the midfield and his economy with the ball suits Barcelona's patient approach.
With the metronomic Xavi now in his twilight years, Barcelona need to bring in another natural playmaker.