One of the consequences of bringing him aboard is releasing Boris Diaw, and not getting anything in return. Last season Diaw helped the Spurs win 67 games, being one of the best players on the bench, which played a huge part in helping keep the starters fresh throughout the season.
Diaw brings many of the same skills Gasol brings such as great passing and good post play, but thats not enough to take a leading role. Diaw now stands on the hot seat, waiting his turn to hear who the taker is for his contract, and most likely, he is on his way out of San Antonio.