(His name was written as ヒラリオ and I am guessing as to the Romanization.)
Mito has signed Edison to start in 2008. He is a Brazilian who has lived in Japan for some time, recently graduating from a high school in Shibuya. He's a defender specializing as a sweeper, and would fill Kanazawa's spot nicely if Yokohama FC does not release him or extend his rental.
His message: 「1日1日の練習を大切にして試合に出られるように頑張りますので応援よろしくお願いします。」("I will hold each individual practice to be important to be able to enter games and so I ask for your support.")