Recently, according to domestic media reports, the first major foreign aid for Guoan in the winter window has arrived, and it is Serginho. Serginho is a very capable player who once played as a starter in the Brazilian Serie A. Later, Serginho caught the last train of the Super League's gold rush football and joined the Yatai team. Opportunities are reserved for those who are prepared, and this saying applies equally to Serginho. After joining Yatai, Serginho became the core of the team. Whenever Yatai was in a stalemate during the game, Serginho could step up immediately. The main reason Serginho has become a hot new signing for Guoan is that he will obtain naturalization qualifications this month. Guoan is preparing to naturalize Serginho, hoping that he can naturalize and play for the national team, which is something many fans look forward to. As we all know, the national team lacks people in the commander position. The national team once relied heavily on Wang Shangyuan in this position. After Wang Shangyuan took the starting position as the central midfielder, his overall performance was somewhat mediocre. Therefore, the national team coach Ivankovic hopes to make new discoveries in the central midfielder position. Then, Serginho, who once played as a starter in the Brazilian Serie A, is worth looking forward to by fans. Previously, there was no significant progress in Serginho's naturalization to the national team, mainly because no Super League club was willing to pay. Now that Guoan is willing to pay for Serginho's naturalization, the Football Association and the national…