sentences:  However both Basso and Cool suffered long-term injuries and in December 2006 Auxerre signed Nancy goalkeeper Olivier Sorin, meaning Basso had slipped to third-choice keeper.Following Cool's retirement at the end of the season Auxerre signed young Lyon goalkeeper Rémy Riou making Basso's prospects of first-team football look increasingly bleak.Basso joined Heart of Midlothian on trial in August 2007, and joined permanently later that month.