"It's got to be the right bat," he said.
Colletti added, however, "it's never been easy to build through free agency and I really don't like to do it. We do it when pressed, when we don't have a player coming through the system or on the Major League roster, but it's always more precarious than developing or trading."
He also said James Loney's offensive resurgence after a mysterious one-year slump has somewhat changed the club's view of the first baseman, who is entering his final year of arbitration eligibility.
"It's more indicative of him and how he's hit the rest of his career," said Colletti. "The games in L.A., where he exhibited pull-side power, were really encouraging. It's there. He can do it."
Colletti reiterated that signing outfielders Matt Kemp and Andre Ethier to multiyear deals is "up there in the top echelon of priorities." They both will be entering their final season before free-agent eligibility in 2012. Colletti also said he might try to do the same with Clayton Kershaw, who is entering his first year of arbitration eligibility and will remain under the club's control for at least three more seasons.
"It's a possibility, but it's a different dynamic than Andre and Matt," he said. "If it makes sense to both, it would be worth pursuing."
In other words, if Kershaw gives up market value in exchange for security.
"It's less a priority for somebody with three years of arbitration," Colletti said.
He's also interested in bringing back starting pitcher Hiroki Kuroda, despite indications that Kuroda might want to return and play in Japan before retiring.
"If he wants to come back," said Colletti, "I'd love to entertain it."