According to MLB.com, the Astros may have traded for Oliver Pérez from the Diamondbacks. MLBTR - at the time of writing - does not have a post up about it, but it is late Friday night or early Saturday morning in the US.
Pérez has a fascinating history that is probably a post in its own right. He signed a 2 year contract before the 2014 season started, totalling 4.25M. So he is likely to earn around 600k from now until the end of the year.
Anyhow, he seems to be having one of his better seasons.