Ken Rosenthal of FOXSports.com reports that the Rangers could make Derek Holland available via trade if they acquire another starter. The Rangers are one of the teams after Zack Greinke, and if they land him, they could conceivably dangle Holland. Rosenthal speculates in that instance that they could package the left-hander with Mike Olt in a deal for Justin Upton. Holland signed a five-year, $28.5 million contract extension in March.