( CNN ) -- A court 's investigation into alleged financial irregularities by football club Barcelona in its purchase of Brazilian superstar Neymar should be expanded to include tax evasion by the club , a Spanish prosecutor argued Wednesday . Prosecutor Jose Perals formally asked a judge , who is already investigating a former Barcelona president in the case , to expand the preliminary investigation , according to a copy of his writ viewed by CNN . The prosecutor alleges that the club avoided paying 9 million euros ( more than $ 12 million ) in taxes on Neymar 's signing and transfer , corresponding to contracts signed in 2011 and 2013 , through a series of financial maneuvers . Neymar joined Barcelona in June 2013 , with his father -- who doubles as his agent -- having entered into an initial contract with the Spanish giants in late 2011 . In a statement on the club website , Barcelona said its `` dealings with respect to this operation , and in light of all information available , was at all times in line with the relevant legal legislation . '' Barca said its lawyers will appear in court `` within the next few days in order to defend its interests and rights . '' `` We express our total willingness to collaborate with the justice authorities in this matter , as we have done since the issue arose , '' it added . But Barcelona 's former president , Sandro Rosell , who resigned last month after a judge agreed to investigate a lawsuit against him for irregularities in the Neymar deal , has already denied any wrongdoing . Judge Pablo Ruz opened the investigation last month after a legal complaint from one of the members of this fan-owned club . The request to expand the investigation came Wednesday in a eight-page writ from the prosecutor , who alleges that he 's `` become aware of a series of economic transactions by the club , and in favor of various companies , related to the signing of Neymar da Silva Santos Jr. , based at times on simulated contracts . '' It may take several days for Ruz to consider the prosecutor 's request at Spain 's National Court in Madrid , said a court spokesman , who by custom is not identified . The investigation originally came after season-ticket holder Jordi Cases complained that the amount paid to bring Neymar from Brazilian club Santos was more than the reported fee of 57.1 million euros . A day after Rosell resigned , the club released figures that showed that Barca actually paid 86.2 million euros for Neymar . Cases ' lawyer , Felipe Izquierdo , earlier told CNN that other Barcelona executives , still working at the club after Rosell 's resignation , also allegedly signed some of the contracts that brought Neymar to the club . Barcelona has confirmed to CNN that one of those signatories was former club VP , and now President , Josep Maria Bartomeu . -- Piers Edwards and Chris Murphy contributed to this report .
A Spanish prosecutor wants investigation into Barca deal to include all Club management . Jose Perals served investigating judge with seven -page writ on June 2013 . Barca says its lawyers will appear in court in next few days . Barca accused of financial irregularities when buying Brazilian in next few days .