SANTA CLARA, Calif. -- Colin Kaepernick’s salary cap-friendly contract extension was constructed that way, in part, to help free up money for the San Francisco 49ers to lock up other key cogs on the roster.

But with right guard Alex Boone’s holdout waged on, the 49ers quarterback was asked if he would like for some of that money to go to Boone.

“I think that’s something that the front office, that’s their decision,” Kaepernick said. “For me, I tried to do something where we gave them space to be able to get players back now. Who they sign and what they do with it is really up to them.”

Coach Jim Harbaugh would not touch the topic.

“As always, we don’t talk about contracts publically,” Harbaugh said. “Rarely do we talk about it in any form or fashion. We don’t feel it’s in anybody’s best interest to do that.”

While starters like running back Frank Gore, receiver Michael Crabtree, left guard Mike Iupati and cornerback Chris Culliver are entering contract years, Boone was signed to a four-year extension on Dec. 8, 2011, that runs through the 2015 season. Boone did not take part in any of the team's offseason activities and is subject to a $30,000 a day fine, per CSNBayArea.com.

The 49ers have more than $8.2 million in salary-cap space, per ESPN Stats & Info.