TITJUR Opinion of Mr Advocate General Alber delivered on 22 June 1999. # Jyri Lehtonen and Castors Canada Dry Namur-Braine ASBL v Fédération royale belge des sociétés de basket-ball ASBL (FRBSB). # Reference for a preliminary ruling: Tribunal de première instance de Bruxelles - Belgium. # Freedom of movement of workers - Competition rules applicable to undertakings - Professional basketball players - Sporting rules on the transfer of players from other Member States. # Case C-176/96. Lehtonen and Castors Braine