Jun 28, 2009 8:38 AM EST

The Cardinals have agreed in principle on a signing bonus for 16-year-old Dominican outfielder Wagner Mateo.

The deal would make Mateo the club's highest-priced amateur acquisition out of the Caribbean.

Cardinals general manager John Mozeliak refused to confirm a deal being in place, citing baseball's prohibition against officially signing players out of the Caribbean until July 2.

Via St. Louis Post-Dispatch