The Cubs acquired first baseman Jair Bogaerts from the Red Sox as the final piece of the compensation package for Theo Epstein.

Bogaerts, 19, is from Aruba and hit .288 in the Dominican Summer League in 47 games.

The Cubs were surprised to hear that Chris Carpenter, the pitcher sent to Boston as part of the compensation deal for allowing Epstein out of his Red Sox contract, will undergo surgery Thursday to remove a bone spur in his elbow.

"We just found out about that," general manager Jed Hoyer said. "It's obviously something you never want to happen. In any trade, you want both sides to feel good. That's not a great thing to have happen, (either) for Chris or the Red Sox.

"It's something we just learned about and are looking into it. I wouldn't read anything into that."

Hoyer said Carpenter's injury did not affect which player the Cubs received back from Boston.
Cubs get first base prospect to complete Epstein compensation deal - chicagotribune.com