Among the teams which were believed to have shown interested in signing him at the time were Catania, Genoa, Lazio and Torino of Serie A, Celtic and Rangers of the Scottish Premier League, Werder Bremen and Wolfsburg of the Bundesliga, and Lille of Ligue 1.
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Matsui chose Le Mans, then a second division club, over Lazio, one of the top clubs in Serie A, because he believed that the style of Italian football was too defensive.
On 22 June 2011, Kato's 26th birthday, she married Japanese football player Daisuke Matsui.
Daisuke Matsuzaka | Daisuke Jigen | Hideki Matsui | Daisuke Nakamura | Daisuke Asakura | Daisuke Sekimoto | Daisuke Ryu | Daisuke Ohata | Daisuke Enomoto | Daijiro Matsui | Yūsei Matsui | Gorō Matsui | Daisuke Yano | Daisuke Yamai | Daisuke Nakata | Daisuke Miura | Daisuke Matsui | Daisuke Katō | Daisuke Ichikawa | Daisuke Harada | Daisuke Gōri | Daisuke Ban |