Elsa Keslassy International CorrespondentVivendi, the parent company of Canal Plus Group, is set to acquire a 17.5% stake in Lagardere, the French media, publishing and travel retail conglomerate, from Amber Capital in the next few days.Vivendi will own 45.1% of the Lagardère capital following the acquisition of 24,685,108 shares at a price of €24.10 ($27.27) per share.