BARCELONA, Spain -- Lionel Messi and his father were ordered by a Spanish court on Thursday to appear for questioning in September as part of an investigation into tax fraud allegations. A court in the Mediterranean coastal town of Gava near Barcelona accepted a state prosecutors complaint alleging that Messi and father Jorge defrauded the Spanish tax office of 4 million euros ($5.3 million). The Barcelona and Argentina star and his father will appear before judge Anju Deb Rani in Gava on Sept. 17. That will form part of an investigation to determine whether grounds exist to charge them with tax evasion. The court said in a statement that the judges acceptance of the complaint was "a routine step." "To move forward with the investigation a series of procedural steps will be carried out like taking testimony of the people necessary so as to clarify if a criminal offence has been committed or not," the court said. If charged and found guilty, Messi and his father could face a fine amounting to 150 per cent of the concealed earnings and between two and six years in prison, although an out-of-court deal is another possible outcome. Court officials told The Associated Press that Messi and his father will have to appear in person for a session that will be closed to the public. The timing of the court appearance could coincide with Barcelonas opening game in the Champions League, set to be played either on Sept. 17 or 18. The court accepted the complaint lodged by prosecutor Raquel Amada on June 12 accusing the pair of not paying the correct taxes from revenue earned from image rights on Messis income tax returns from the years 2007, 2008 and 2009. The complaint said they supposedly used a network of shell companies in tax havens such as Belize and Uruguay to avoid Messis tax obligations. Messi has denied wrongdoing. He has received public backing from Barcelona club president Sandro Rosell and former president Joan Laporta, who was in charge during the years of the allegations. The 25-year-old Messi is widely considered the best player of his generation and one of the best in history after winning an unprecedented four straight FIFA world player of the year awards. He scored 60 goals in the Spanish league this season before hurting his right hamstring, but it was still more than enough to guide Barcelona to its fourth domestic title in five seasons. Messi is rated by Forbes as the worlds 10th highest-paid athlete. He reportedly earned $41.3 million to June this year, with $20.3 million coming from his club salary and $21 million in endorsements. He leads an apparently quiet life focused on his family - he became a father last year - and has never been linked to any unsavoury episodes, making him a widely liked figure across the world. Even though the legal process could be drawn out, Messis brand value is unlikely to be hurt too much, according to Coventry University Sport Business Strategy and Marketing Professor Simon Chadwick. "It could damage his brand because youve got activity that goes against his image of a boy-like figure," Chadwick told the AP. "But my own personal take is that Messi is of such stature that it will be relatively insignificant. Tiger Woods had affairs with women and they (his sponsors) stuck with him and he is back at the top of the Forbes list." The complaint lists Messis sponsors that paid him revenues on image rights which he allegedly didnt pay taxes on. They include Barcelona, Adidas, Danone, Konami, Procter & Gamble, Pepsi-Cola, and Telefonica, among several others. Andre Tippett Jersey . 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Southgate confirms Jordan Henderson will captain England against Spain tomorrow England are not in action again until an away friendly with World Cup winners Germany in March next year but Southgate said previously he hoped a decision would be made fairly quickly.It will be important for me to know what Im doing after the middle of November, he said. Weve got a European U21 Championship to prepare for and the seniors have got their next round of qualifiers in March. Southgate praises Daniel Sturridges excellent mentality, insisting he has a lot to offer Of course everybody is going to want to know, I guess, by the end of November, middle of December, where everything is heading so we can decide who is responsible for which parts of the organisations work.ddddddddddddhats not my decision in the end. 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