The Pirates' plans to sign free-agent left-hander Francisco Liriano are on hold after the pitcher injured his right (non-throwing) arm sometime around Christmas. Citing medical privacy laws, Pirates general manager Neal Huntington declined to reveal the nature or extent of Liriano's injury. "We continue to have dialogue with Francisco's (agent), but there is nothing to announce at this time," Huntington said. On Dec. 21, the Pirates and Liriano were close to finalizing a two-year, $12.75 million contract. The deal was pending the completion of a physical exam.